Add CI workflow for Jekyll site using Docker

This workflow automates the CI process for the Jekyll site, ensuring builds occur on pushes and pull requests to the main branch.

Author: ivanpoh11

.github/workflows/jekyll-docker.yml

@@ -0,0 +1,20 @@
+name: Jekyll site CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Build the site in the jekyll/builder container
+      run: |
+        docker run \
+        -v ${{ github.workspace }}:/srv/jekyll -v ${{ github.workspace }}/_site:/srv/jekyll/_site \
+        jekyll/builder:latest /bin/bash -c "chmod -R 777 /srv/jekyll && jekyll build --future"