diff --git a/404.html b/404.html
index c9447e59..e982bfb5 100644
--- a/404.html
+++ b/404.html
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   "identifier": "https://uomresearchit.github.io/docker-introduction/404.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
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 }
 
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 4ac4f81f..6d82b949 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -261,7 +261,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -340,8 +340,8 @@ <h1>Contributor Code of Conduct</h1>
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   "identifier": "https://uomresearchit.github.io/docker-introduction/CODE_OF_CONDUCT.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
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 }
 
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diff --git a/LICENSE.html b/LICENSE.html
index e7f7c29c..2e711cf0 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -261,7 +261,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -391,8 +391,8 @@ <h1>Licenses</h1>
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   "identifier": "https://uomresearchit.github.io/docker-introduction/LICENSE.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
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 }
 
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diff --git a/advanced-containers.html b/advanced-containers.html
index f7314491..b5cfa9f8 100644
--- a/advanced-containers.html
+++ b/advanced-containers.html
@@ -275,7 +275,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Creating More Complex Container Images</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/advanced-containers.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -937,8 +937,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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-  "dateModified": "2024-04-23",
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+  "dateModified": "2024-04-30",
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 }
 
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diff --git a/aio.html b/aio.html
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--- a/aio.html
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@@ -308,7 +308,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
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 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/introduction.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -605,7 +605,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-hub.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -860,7 +860,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-desktop.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -983,7 +983,7 @@ <h3 class="card-title">Objectives</h3>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/25_gettingstarted_htop2.png" alt="Terminal, running htop inside getting-started container." class="figure mx-auto d-block"></figure>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/26_gettingstarted_exited_t.png" alt="Terminal tab in container from stopped getting-started image." class="figure mx-auto d-block"></figure>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/27_gettingstarted_exited_s.png" alt="Stats tab in container from stopped getting-started image." class="figure mx-auto d-block"></figure>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/28_gettingstarted_exited_c.png" alt="Container list after stopping getting-started image." class="figure mx-auto d-block"></figure>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/44_alpine_logs.png" alt="Logs tab in container from alpine image." class="figure mx-auto d-block"></figure>
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@@ -1271,7 +1271,7 @@ <h4 class="accordion-header" id="headingSolution14">Logs tab</h4>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/45_alpine_i.png" alt="Inspect tab in container from alpine image." class="figure mx-auto d-block"></figure>
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 <figure><img src="fig/docker-desktop/46_alpine_t.png" alt="Terminal tab in container from alpine image." class="figure mx-auto d-block"></figure>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/47_alpine_s.png" alt="Stats tab in container from alpine image." class="figure mx-auto d-block"></figure>
 </div>
@@ -1316,7 +1316,7 @@ <h4 class="accordion-header" id="headingSolution17">Stats tab</h4>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/50_cowsay_logs.png" alt="Logs tab in container from cowsay image." class="figure mx-auto d-block"></figure>
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@@ -1328,7 +1328,7 @@ <h4 class="accordion-header" id="headingSolution18">Logs tab</h4>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/51_cowsay_inspect.png" alt="Inspect tab in container from cowsay image." class="figure mx-auto d-block"></figure>
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@@ -1340,7 +1340,7 @@ <h4 class="accordion-header" id="headingSolution19">Inspect tab</h4>
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 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/52_cowsay_term.png" alt="Terminal tab in container from cowsay image." class="figure mx-auto d-block"></figure>
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@@ -1352,7 +1352,7 @@ <h4 class="accordion-header" id="headingSolution20">Terminal tab</h4>
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 <figure><img src="fig/docker-desktop/53_cowsay_stats.png" alt="Stats tab in container from cowsay image." class="figure mx-auto d-block"></figure>
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@@ -1401,7 +1401,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-docker-cli"><p>Content from <a href="docker-cli.html">Using the Docker command line</a></p>
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-<p>Last updated on 2024-04-23 |
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         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-cli.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -2094,7 +2094,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-creating-container-images"><p>Content from <a href="creating-container-images.html">Creating Your Own Container Images</a></p>
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         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/creating-container-images.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -2206,7 +2206,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -2313,7 +2313,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -2415,7 +2415,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p>To see your new image, run <code>docker image ls</code>. You
@@ -2588,7 +2588,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-advanced-containers"><p>Content from <a href="advanced-containers.html">Creating More Complex Container Images</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/advanced-containers.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -3247,8 +3247,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://uomresearchit.github.io/docker-introduction/aio.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/aio.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/creating-container-images.html b/creating-container-images.html
index c798bef3..222c8ecc 100644
--- a/creating-container-images.html
+++ b/creating-container-images.html
@@ -277,7 +277,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Creating Your Own Container Images</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/creating-container-images.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -388,7 +388,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -492,7 +492,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -589,7 +589,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>To see your new image, run <code>docker image ls</code>. You
 should see the name of your new container image under the “REPOSITORY”
@@ -806,8 +806,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://uomresearchit.github.io/docker-introduction/creating-container-images.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/creating-container-images.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/docker-cli.html b/docker-cli.html
index eb55acf3..dc3c47c2 100644
--- a/docker-cli.html
+++ b/docker-cli.html
@@ -286,7 +286,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Using the Docker command line</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-cli.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1003,8 +1003,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://uomresearchit.github.io/docker-introduction/docker-cli.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/docker-cli.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/docker-desktop.html b/docker-desktop.html
index f693c24d..b89b3482 100644
--- a/docker-desktop.html
+++ b/docker-desktop.html
@@ -278,7 +278,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Docker Desktop</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-desktop.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -400,7 +400,7 @@ <h3 class="card-title">Objectives</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Logs tab</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/11_hello_log.png" alt="Logs tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -411,7 +411,7 @@ <h4 class="accordion-header" id="headingSolution1">Logs tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Inspect tab</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/12_hello_inspect.png" alt="Inspect tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -422,7 +422,7 @@ <h4 class="accordion-header" id="headingSolution2">Inspect tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Terminal tab</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/14_hello_terminal.png" alt="Terminal tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -433,7 +433,7 @@ <h4 class="accordion-header" id="headingSolution3">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Stats tab</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/13_hello_stats.png" alt="Stats tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -477,7 +477,7 @@ <h4 class="accordion-header" id="headingSolution4">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Logs tab</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/18_gettingstarted_log.png" alt="Logs tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -488,7 +488,7 @@ <h4 class="accordion-header" id="headingSolution5">Logs tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Inspect tab</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/19_gettingstarted_inspect.png" alt="Inspect tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -499,7 +499,7 @@ <h4 class="accordion-header" id="headingSolution6">Inspect tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Terminal tab</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/20_gettingstarted_terminal.png" alt="Terminal tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -510,7 +510,7 @@ <h4 class="accordion-header" id="headingSolution7">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Stats tab</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/21_gettingstarted_stats.png" alt="Stats tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -539,7 +539,7 @@ <h4 class="accordion-header" id="headingSolution8">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Installing htop</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/24_gettingstarted_htop.png" alt="Terminal, installing htop inside getting-started container." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -550,7 +550,7 @@ <h4 class="accordion-header" id="headingSolution9">Installing htop</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Running htop</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/25_gettingstarted_htop2.png" alt="Terminal, running htop inside getting-started container." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -566,7 +566,7 @@ <h4 class="accordion-header" id="headingSolution10">Running htop</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Terminal tab</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/26_gettingstarted_exited_t.png" alt="Terminal tab in container from stopped getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -577,7 +577,7 @@ <h4 class="accordion-header" id="headingSolution11">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Stats tab</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/27_gettingstarted_exited_s.png" alt="Stats tab in container from stopped getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -588,7 +588,7 @@ <h4 class="accordion-header" id="headingSolution12">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution13" aria-expanded="false" aria-controls="collapseSolution13">
   <h4 class="accordion-header" id="headingSolution13">Container list</h4>
 </button>
-<div id="collapseSolution13" class="accordion-collapse collapse" aria-labelledby="headingSolution13" data-bs-parent="#accordionSolution13">
+<div id="collapseSolution13" class="accordion-collapse collapse" data-bs-parent="#accordionSolution13" aria-labelledby="headingSolution13">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/28_gettingstarted_exited_c.png" alt="Container list after stopping getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -659,7 +659,7 @@ <h4 class="accordion-header" id="headingSolution13">Container list</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution14" aria-expanded="false" aria-controls="collapseSolution14">
   <h4 class="accordion-header" id="headingSolution14">Logs tab</h4>
 </button>
-<div id="collapseSolution14" class="accordion-collapse collapse" aria-labelledby="headingSolution14" data-bs-parent="#accordionSolution14">
+<div id="collapseSolution14" class="accordion-collapse collapse" data-bs-parent="#accordionSolution14" aria-labelledby="headingSolution14">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/44_alpine_logs.png" alt="Logs tab in container from alpine image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -670,7 +670,7 @@ <h4 class="accordion-header" id="headingSolution14">Logs tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution15" aria-expanded="false" aria-controls="collapseSolution15">
   <h4 class="accordion-header" id="headingSolution15">Inspect tab</h4>
 </button>
-<div id="collapseSolution15" class="accordion-collapse collapse" aria-labelledby="headingSolution15" data-bs-parent="#accordionSolution15">
+<div id="collapseSolution15" class="accordion-collapse collapse" data-bs-parent="#accordionSolution15" aria-labelledby="headingSolution15">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/45_alpine_i.png" alt="Inspect tab in container from alpine image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -681,7 +681,7 @@ <h4 class="accordion-header" id="headingSolution15">Inspect tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution16" aria-expanded="false" aria-controls="collapseSolution16">
   <h4 class="accordion-header" id="headingSolution16">Terminal tab</h4>
 </button>
-<div id="collapseSolution16" class="accordion-collapse collapse" aria-labelledby="headingSolution16" data-bs-parent="#accordionSolution16">
+<div id="collapseSolution16" class="accordion-collapse collapse" data-bs-parent="#accordionSolution16" aria-labelledby="headingSolution16">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/46_alpine_t.png" alt="Terminal tab in container from alpine image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -692,7 +692,7 @@ <h4 class="accordion-header" id="headingSolution16">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution17" aria-expanded="false" aria-controls="collapseSolution17">
   <h4 class="accordion-header" id="headingSolution17">Stats tab</h4>
 </button>
-<div id="collapseSolution17" class="accordion-collapse collapse" aria-labelledby="headingSolution17" data-bs-parent="#accordionSolution17">
+<div id="collapseSolution17" class="accordion-collapse collapse" data-bs-parent="#accordionSolution17" aria-labelledby="headingSolution17">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/47_alpine_s.png" alt="Stats tab in container from alpine image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -712,7 +712,7 @@ <h4 class="accordion-header" id="headingSolution17">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution18" aria-expanded="false" aria-controls="collapseSolution18">
   <h4 class="accordion-header" id="headingSolution18">Logs tab</h4>
 </button>
-<div id="collapseSolution18" class="accordion-collapse collapse" aria-labelledby="headingSolution18" data-bs-parent="#accordionSolution18">
+<div id="collapseSolution18" class="accordion-collapse collapse" data-bs-parent="#accordionSolution18" aria-labelledby="headingSolution18">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/50_cowsay_logs.png" alt="Logs tab in container from cowsay image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -723,7 +723,7 @@ <h4 class="accordion-header" id="headingSolution18">Logs tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution19" aria-expanded="false" aria-controls="collapseSolution19">
   <h4 class="accordion-header" id="headingSolution19">Inspect tab</h4>
 </button>
-<div id="collapseSolution19" class="accordion-collapse collapse" aria-labelledby="headingSolution19" data-bs-parent="#accordionSolution19">
+<div id="collapseSolution19" class="accordion-collapse collapse" data-bs-parent="#accordionSolution19" aria-labelledby="headingSolution19">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/51_cowsay_inspect.png" alt="Inspect tab in container from cowsay image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -734,7 +734,7 @@ <h4 class="accordion-header" id="headingSolution19">Inspect tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution20" aria-expanded="false" aria-controls="collapseSolution20">
   <h4 class="accordion-header" id="headingSolution20">Terminal tab</h4>
 </button>
-<div id="collapseSolution20" class="accordion-collapse collapse" aria-labelledby="headingSolution20" data-bs-parent="#accordionSolution20">
+<div id="collapseSolution20" class="accordion-collapse collapse" data-bs-parent="#accordionSolution20" aria-labelledby="headingSolution20">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/52_cowsay_term.png" alt="Terminal tab in container from cowsay image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -745,7 +745,7 @@ <h4 class="accordion-header" id="headingSolution20">Terminal tab</h4>
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   <h4 class="accordion-header" id="headingSolution21">Stats tab</h4>
 </button>
-<div id="collapseSolution21" class="accordion-collapse collapse" aria-labelledby="headingSolution21" data-bs-parent="#accordionSolution21">
+<div id="collapseSolution21" class="accordion-collapse collapse" data-bs-parent="#accordionSolution21" aria-labelledby="headingSolution21">
 <div class="accordion-body">
 <figure><img src="fig/docker-desktop/53_cowsay_stats.png" alt="Stats tab in container from cowsay image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -847,8 +847,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "identifier": "https://uomresearchit.github.io/docker-introduction/docker-desktop.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
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diff --git a/docker-hub.html b/docker-hub.html
index 829bc337..ac3ff186 100644
--- a/docker-hub.html
+++ b/docker-hub.html
@@ -276,7 +276,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>The Docker Hub</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-hub.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -573,8 +573,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "identifier": "https://uomresearchit.github.io/docker-introduction/docker-hub.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/images.html b/images.html
index edcfd78f..682550f5 100644
--- a/images.html
+++ b/images.html
@@ -630,8 +630,8 @@ <h3 id="docker-cli-figure-5">Figure 5</h3>
   "url": "https://uomresearchit.github.io/docker-introduction/images.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/images.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/index.html b/index.html
index bc678ba1..493f3a2f 100644
--- a/index.html
+++ b/index.html
@@ -629,8 +629,8 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
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   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
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 }
 
   </script><script>
diff --git a/instructor-notes.html b/instructor-notes.html
index 965868e8..e3c2f984 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
@@ -363,8 +363,8 @@ <h1>Instructor Notes</h1>
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   "identifier": "https://uomresearchit.github.io/docker-introduction/instructor-notes.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
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 }
 
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diff --git a/instructor/404.html b/instructor/404.html
index e17ad384..5ff91b3e 100644
--- a/instructor/404.html
+++ b/instructor/404.html
@@ -319,8 +319,8 @@ <h1>Page not found</h1>
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-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
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 }
 
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diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index 6b9415ea..a8861165 100644
--- a/instructor/CODE_OF_CONDUCT.html
+++ b/instructor/CODE_OF_CONDUCT.html
@@ -260,7 +260,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -341,8 +341,8 @@ <h1>Contributor Code of Conduct</h1>
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   "identifier": "https://uomresearchit.github.io/docker-introduction/instructor/CODE_OF_CONDUCT.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
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diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index 71dd2633..a0f711d1 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -260,7 +260,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -392,8 +392,8 @@ <h1>Licenses</h1>
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-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
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 }
 
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diff --git a/instructor/advanced-containers.html b/instructor/advanced-containers.html
index 4b62f780..01edc4ce 100644
--- a/instructor/advanced-containers.html
+++ b/instructor/advanced-containers.html
@@ -274,7 +274,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Creating More Complex Container Images</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/advanced-containers.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -938,8 +938,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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-  "dateModified": "2024-04-23",
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 }
 
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diff --git a/instructor/aio.html b/instructor/aio.html
index e0ca2729..a661983b 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -308,7 +308,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-introduction"><p>Content from <a href="introduction.html">Introducing Containers</a></p>
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-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
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 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 20 minutes</p>
@@ -606,7 +606,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-docker-hub"><p>Content from <a href="docker-hub.html">The Docker Hub</a></p>
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+<p>Last updated on 2024-04-30 |
         
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 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 20 minutes</p>
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+<p>Last updated on 2024-04-30 |
         
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 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 20 minutes</p>
@@ -986,7 +986,7 @@ <h3 class="card-title">Objectives</h3>
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 <div class="accordion-body">
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+<div id="collapseSolution17" class="accordion-collapse collapse" data-bs-parent="#accordionSolution17" aria-labelledby="headingSolution17">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/47_alpine_s.png" alt="Stats tab in container from alpine image." class="figure mx-auto d-block"></figure>
 </div>
@@ -1319,7 +1319,7 @@ <h4 class="accordion-header" id="headingSolution17">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution18" aria-expanded="false" aria-controls="collapseSolution18">
   <h4 class="accordion-header" id="headingSolution18">Logs tab</h4>
 </button>
-<div id="collapseSolution18" class="accordion-collapse collapse" aria-labelledby="headingSolution18" data-bs-parent="#accordionSolution18">
+<div id="collapseSolution18" class="accordion-collapse collapse" data-bs-parent="#accordionSolution18" aria-labelledby="headingSolution18">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/50_cowsay_logs.png" alt="Logs tab in container from cowsay image." class="figure mx-auto d-block"></figure>
 </div>
@@ -1331,7 +1331,7 @@ <h4 class="accordion-header" id="headingSolution18">Logs tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution19" aria-expanded="false" aria-controls="collapseSolution19">
   <h4 class="accordion-header" id="headingSolution19">Inspect tab</h4>
 </button>
-<div id="collapseSolution19" class="accordion-collapse collapse" aria-labelledby="headingSolution19" data-bs-parent="#accordionSolution19">
+<div id="collapseSolution19" class="accordion-collapse collapse" data-bs-parent="#accordionSolution19" aria-labelledby="headingSolution19">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/51_cowsay_inspect.png" alt="Inspect tab in container from cowsay image." class="figure mx-auto d-block"></figure>
 </div>
@@ -1343,7 +1343,7 @@ <h4 class="accordion-header" id="headingSolution19">Inspect tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution20" aria-expanded="false" aria-controls="collapseSolution20">
   <h4 class="accordion-header" id="headingSolution20">Terminal tab</h4>
 </button>
-<div id="collapseSolution20" class="accordion-collapse collapse" aria-labelledby="headingSolution20" data-bs-parent="#accordionSolution20">
+<div id="collapseSolution20" class="accordion-collapse collapse" data-bs-parent="#accordionSolution20" aria-labelledby="headingSolution20">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/52_cowsay_term.png" alt="Terminal tab in container from cowsay image." class="figure mx-auto d-block"></figure>
 </div>
@@ -1355,7 +1355,7 @@ <h4 class="accordion-header" id="headingSolution20">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution21" aria-expanded="false" aria-controls="collapseSolution21">
   <h4 class="accordion-header" id="headingSolution21">Stats tab</h4>
 </button>
-<div id="collapseSolution21" class="accordion-collapse collapse" aria-labelledby="headingSolution21" data-bs-parent="#accordionSolution21">
+<div id="collapseSolution21" class="accordion-collapse collapse" data-bs-parent="#accordionSolution21" aria-labelledby="headingSolution21">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/53_cowsay_stats.png" alt="Stats tab in container from cowsay image." class="figure mx-auto d-block"></figure>
 </div>
@@ -1404,7 +1404,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-docker-cli"><p>Content from <a href="docker-cli.html">Using the Docker command line</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-cli.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 198 minutes</p>
@@ -2098,7 +2098,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-creating-container-images"><p>Content from <a href="creating-container-images.html">Creating Your Own Container Images</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/creating-container-images.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 35 minutes</p>
@@ -2211,7 +2211,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -2318,7 +2318,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -2420,7 +2420,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p>To see your new image, run <code>docker image ls</code>. You
@@ -2593,7 +2593,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
 </div>
 </section></section><section id="aio-advanced-containers"><p>Content from <a href="advanced-containers.html">Creating More Complex Container Images</a></p>
 <hr>
-<p>Last updated on 2024-04-23 |
+<p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/advanced-containers.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 60 minutes</p>
@@ -3253,8 +3253,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://uomresearchit.github.io/docker-introduction/instructor/aio.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/instructor/aio.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/instructor/creating-container-images.html b/instructor/creating-container-images.html
index 9068fe54..57c90ef0 100644
--- a/instructor/creating-container-images.html
+++ b/instructor/creating-container-images.html
@@ -276,7 +276,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Creating Your Own Container Images</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/creating-container-images.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -389,7 +389,7 @@ <h3 class="callout-title">Exercise: Searching for Help<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>A quick search should hopefully show that the way to install R on
 Alpine Linux is:</p>
@@ -493,7 +493,7 @@ <h3 class="callout-title">Exercise: Take a Guess<a class="anchor" aria-label="an
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Solution:</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Based on our experience above, edit the <code>Dockerfile</code> (in
 your text editor of choice) to look like this:</p>
@@ -590,7 +590,7 @@ <h3 class="callout-title">Exercise: Review!<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>To see your new image, run <code>docker image ls</code>. You
 should see the name of your new container image under the “REPOSITORY”
@@ -807,8 +807,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://uomresearchit.github.io/docker-introduction/instructor/creating-container-images.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/instructor/creating-container-images.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/instructor/docker-cli.html b/instructor/docker-cli.html
index 961a7b47..3da9b050 100644
--- a/instructor/docker-cli.html
+++ b/instructor/docker-cli.html
@@ -285,7 +285,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Using the Docker command line</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-cli.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1004,8 +1004,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://uomresearchit.github.io/docker-introduction/instructor/docker-cli.html",
   "identifier": "https://uomresearchit.github.io/docker-introduction/instructor/docker-cli.html",
   "dateCreated": "2015-04-18",
-  "dateModified": "2024-04-23",
-  "datePublished": "2024-04-23"
+  "dateModified": "2024-04-30",
+  "datePublished": "2024-04-30"
 }
 
   </script><script>
diff --git a/instructor/docker-desktop.html b/instructor/docker-desktop.html
index 36dffdff..87de078f 100644
--- a/instructor/docker-desktop.html
+++ b/instructor/docker-desktop.html
@@ -277,7 +277,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Docker Desktop</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/docker-desktop.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -401,7 +401,7 @@ <h3 class="card-title">Objectives</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Logs tab</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/11_hello_log.png" alt="Logs tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -412,7 +412,7 @@ <h4 class="accordion-header" id="headingSolution1">Logs tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Inspect tab</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/12_hello_inspect.png" alt="Inspect tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -423,7 +423,7 @@ <h4 class="accordion-header" id="headingSolution2">Inspect tab</h4>
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/14_hello_terminal.png" alt="Terminal tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -434,7 +434,7 @@ <h4 class="accordion-header" id="headingSolution3">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Stats tab</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/13_hello_stats.png" alt="Stats tab in container from hello-world image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -478,7 +478,7 @@ <h4 class="accordion-header" id="headingSolution4">Stats tab</h4>
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   <h4 class="accordion-header" id="headingSolution5">Logs tab</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/18_gettingstarted_log.png" alt="Logs tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -489,7 +489,7 @@ <h4 class="accordion-header" id="headingSolution5">Logs tab</h4>
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   <h4 class="accordion-header" id="headingSolution6">Inspect tab</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/19_gettingstarted_inspect.png" alt="Inspect tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -500,7 +500,7 @@ <h4 class="accordion-header" id="headingSolution6">Inspect tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Terminal tab</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/20_gettingstarted_terminal.png" alt="Terminal tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -511,7 +511,7 @@ <h4 class="accordion-header" id="headingSolution7">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Stats tab</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/21_gettingstarted_stats.png" alt="Stats tab in container from getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -540,7 +540,7 @@ <h4 class="accordion-header" id="headingSolution8">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Installing htop</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/24_gettingstarted_htop.png" alt="Terminal, installing htop inside getting-started container." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -551,7 +551,7 @@ <h4 class="accordion-header" id="headingSolution9">Installing htop</h4>
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   <h4 class="accordion-header" id="headingSolution10">Running htop</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/25_gettingstarted_htop2.png" alt="Terminal, running htop inside getting-started container." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -567,7 +567,7 @@ <h4 class="accordion-header" id="headingSolution10">Running htop</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
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 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/26_gettingstarted_exited_t.png" alt="Terminal tab in container from stopped getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -578,7 +578,7 @@ <h4 class="accordion-header" id="headingSolution11">Terminal tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
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 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/27_gettingstarted_exited_s.png" alt="Stats tab in container from stopped getting-started image." class="figure mx-auto d-block"></figure></div>
 </div>
@@ -589,7 +589,7 @@ <h4 class="accordion-header" id="headingSolution12">Stats tab</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution13" aria-expanded="false" aria-controls="collapseSolution13">
   <h4 class="accordion-header" id="headingSolution13">Container list</h4>
 </button>
-<div id="collapseSolution13" class="accordion-collapse collapse" aria-labelledby="headingSolution13" data-bs-parent="#accordionSolution13">
+<div id="collapseSolution13" class="accordion-collapse collapse" data-bs-parent="#accordionSolution13" aria-labelledby="headingSolution13">
 <div class="accordion-body">
 <figure><img src="../fig/docker-desktop/28_gettingstarted_exited_c.png" alt="Container list after stopping getting-started image." class="figure mx-auto d-block"></figure></div>
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@@ -660,7 +660,7 @@ <h4 class="accordion-header" id="headingSolution13">Container list</h4>
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index b87a8e49..b3be0d6c 100644
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-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
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index 2aaacafa..de340b24 100644
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index 103b963e..c1c47630 100644
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index 136433cc..62b533f1 100644
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diff --git a/instructor/introduction.html b/instructor/introduction.html
index 62892f81..f449867d 100644
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-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
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index 57709133..b5f25c68 100644
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index af42c6ff..b4e24df8 100644
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-  "dateModified": "2024-04-23",
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diff --git a/introduction.html b/introduction.html
index 7870df88..a937a7e7 100644
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         <h1>Introducing Containers</h1>
-        <p>Last updated on 2024-04-23 |
+        <p>Last updated on 2024-04-30 |
         
         <a href="https://github.com/UoMResearchIT/docker-introduction/edit/main/episodes/introduction.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -615,8 +615,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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index cdd4f9b0..60775a1f 100644
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diff --git a/pkgdown.yml b/pkgdown.yml
index 15e26406..61c6b637 100644
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index fd1f1ee2..c728662a 100644
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