Add PR preview deployment action

.github/workflows/jekyll.yml

@@ -16,7 +16,7 @@ on:
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
 permissions:
-  contents: read
+  contents: write
   pages: write
   id-token: write
 
@@ -27,8 +27,8 @@ concurrency:
   cancel-in-progress: false
 
 jobs:
-  # Build job
-  build:
+  # Build and deploy job
+  build-and-deploy:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -40,26 +40,16 @@ jobs:
           ruby-version: '3.1' # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically
           cache-version: 0 # Increment this number if you need to re-download cached gems
-      - name: Setup Pages
-        id: pages
-        uses: actions/configure-pages@v5
       - name: Build with Jekyll
         # Outputs to the './_site' directory by default
-        run: bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path }}"
+        run: bundle exec jekyll build
         env:
           JEKYLL_ENV: production
-      - name: Upload artifact
-        # Automatically uploads an artifact from the './_site' directory by default
-        uses: actions/upload-pages-artifact@v3
-
-  # Deployment job
-  deploy:
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
       - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./_site
+          publish_branch: gh-pages
+          # Keep existing files (preserves PR preview directories)
+          keep_files: true

.github/workflows/pr-preview.yml

@@ -0,0 +1,45 @@
+# Workflow for deploying PR previews to GitHub Pages
+name: Deploy PR Preview
+
+on:
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - closed
+
+# Sets permissions of the GITHUB_TOKEN
+permissions:
+  contents: write
+  pull-requests: write
+
+# Prevent concurrent deployments for the same PR
+concurrency: preview-${{ github.ref }}
+
+jobs:
+  deploy-preview:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        if: github.event.action != 'closed'
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@4a9ddd6f338a97768b8006bf671dfbad383215f4
+        if: github.event.action != 'closed'
+        with:
+          ruby-version: '3.1'
+          bundler-cache: true
+          cache-version: 0
+
+      - name: Build with Jekyll
+        if: github.event.action != 'closed'
+        run: bundle exec jekyll build --baseurl "/pr-preview/pr-${{ github.event.number }}"
+        env:
+          JEKYLL_ENV: production
+
+      - name: Deploy PR Preview
+        uses: rossjrw/pr-preview-action@v1.6.3
+        with:
+          source-dir: ./_site/