diff --git a/R/container.R b/R/container.R
index c0ac306..0687a01 100644
--- a/R/container.R
+++ b/R/container.R
@@ -276,7 +276,7 @@ gce_vm_container <- function(file = NULL,
 #' This will only work on the Google Container optimised containers of image_family google_containers.
 #' Otherwise you will need to get a container authentication yourself (for now)
 #' 
-#' It will start the push but it may take a long time to finish, espeically the first time, 
+#' It will start the push but it may take a long time to finish, especially the first time, 
 #'   this function will return whilst waiting but don't turn off the VM until its finished.
 #' @return The tag the image was tagged with on GCE
 #' @export
diff --git a/inst/cloudconfig/opencpu.yaml b/inst/cloudconfig/opencpu.yaml
index b3930ab..6fc327d 100644
--- a/inst/cloudconfig/opencpu.yaml
+++ b/inst/cloudconfig/opencpu.yaml
@@ -21,6 +21,7 @@ write_files:
                                   --name=opencpu-server \
                                   %s
     ExecStop=/usr/bin/docker stop opencpu
+    ExecStopPost=/usr/bin/docker rm opencpu
 
 runcmd:
 - systemctl daemon-reload
diff --git a/inst/cloudconfig/r-base.yaml b/inst/cloudconfig/r-base.yaml
index 2de90d5..27b9ea3 100644
--- a/inst/cloudconfig/r-base.yaml
+++ b/inst/cloudconfig/r-base.yaml
@@ -24,6 +24,7 @@ write_files:
                                   --net=host \
                                   %s
     ExecStop=/usr/bin/docker stop r-base
+    ExecStopPost=/usr/bin/docker rm r-base
 
 runcmd:
 - systemctl daemon-reload
diff --git a/inst/cloudconfig/shiny.yaml b/inst/cloudconfig/shiny.yaml
index 92458ac..43e87f5 100644
--- a/inst/cloudconfig/shiny.yaml
+++ b/inst/cloudconfig/shiny.yaml
@@ -27,6 +27,7 @@ write_files:
                                   -v /home/gcer/library/:/library/ \
                                   %s
     ExecStop=/usr/bin/docker stop shiny
+    ExecStopPost=/usr/bin/docker rm shiny
 
 runcmd:
 - systemctl daemon-reload
diff --git a/inst/dockerfiles/googleComputeEngineR-worker/Dockerfile b/inst/dockerfiles/googleComputeEngineR-worker/Dockerfile
new file mode 100644
index 0000000..7f66c01
--- /dev/null
+++ b/inst/dockerfiles/googleComputeEngineR-worker/Dockerfile
@@ -0,0 +1,17 @@
+FROM rocker/verse
+MAINTAINER Mark Edmondson (r@sunholo.com)
+
+# install R package dependencies
+RUN apt-get update && apt-get install -y \
+    ## clean up
+    && apt-get clean \ 
+    && rm -rf /var/lib/apt/lists/ \ 
+    && rm -rf /tmp/downloaded_packages/ /tmp/*.rds
+    
+## Install packages from CRAN
+RUN install2.r --error \ 
+    -r 'http://cran.rstudio.com' \
+    googleComputeEngineR \
+    ## install Github packages
+    ## clean up
+    && rm -rf /tmp/downloaded_packages/ /tmp/*.rds \
diff --git a/inst/dockerfiles/hadleyverse-crontab/Dockerfile b/inst/dockerfiles/hadleyverse-crontab/Dockerfile
index fd58686..7372f97 100644
--- a/inst/dockerfiles/hadleyverse-crontab/Dockerfile
+++ b/inst/dockerfiles/hadleyverse-crontab/Dockerfile
@@ -18,3 +18,6 @@ RUN install2.r --error \
     && Rscript -e "devtools::install_github(c('bnosac/cronR'))" \
     ## clean up
     && rm -rf /tmp/downloaded_packages/ /tmp/*.rds \
+
+## Start cron
+RUN service cron start
\ No newline at end of file