Overwrite baseurl for preview

Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

.gitea/workflows/jekyll.yaml

@@ -44,6 +44,10 @@ jobs:
       - name: Build Jekyll site
         id: build_site
         run: |
+          # Overwrite the baseurl for previewonly
+          if [ "${{ gitea.event }}" = 'pull_request' ]; then
+            sed -i -r -e 's/^baseurl:\s*"([^"]*)"/baseurl: "\1\/${{ gitea.event.pull_request.number }}"/' _config.yml
+          fi
           docker-compose run --rm -v "${JOB_CONTAINER_NAME}:/site" -w /site \
           jekyll build --verbose
         continue-on-error: true

src/index.html

@@ -5,7 +5,7 @@ author_profile: false
 header:
   overlay_color: "#000"
   overlay_filter: "0.4"
-  overlay_image: /assets/images/overlay.jpg
+  overlay_image: {{ /assets/images/overlay.jpg | relative_url }}
   actions:
     - label: "Download"
       url: "https://tahoe-lafs.org/downloads"