Migrate to Cloudflare Pages

For cheaper hosting; and provides quicker response times for visitors
outside of the UK.

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: Test
+
+on: [push, pull_request]
+
+jobs:
+  proofing:
+    name: Proofing
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.3'
+        bundler-cache: true
+
+    - name: Build
+      run: JEKYLL_ENV=production bundle exec jekyll build
+
+    - name: Check for problems
+      run: scripts/test.sh

scripts/build.sh

@@ -2,8 +2,5 @@
 
 cd "$(dirname "$0")"/../
 
-if [ -z "$JEKYLL_ENV" ]; then
-    export JEKYLL_ENV=production
-fi
-
+export JEKYLL_ENV=production
 bundle exec jekyll build

scripts/test.sh

@@ -9,9 +9,9 @@
 cd "$(dirname $0)/../"
 
 bundle exec htmlproofer \
-    --only-4xx \
     --ignore-status-codes 429,500 \
     --ignore-urls github.com \
     --ignore-files ./_site/translations/index.html \
+    --log-level debug \
     ./_site
 exit $?