ci(github): deploy site to gh-pages branch

.github/workflows/deploy.yml

@@ -3,15 +3,14 @@ name: Deploy site
 on:
   # Runs on pushes targeting the default branch
   push:
-    branches: ['main']
+    branches: ['ci-test']
 
   # Allows you to run this workflow manually from the Actions tab
   workflow_dispatch:
 
 # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
 permissions:
-  contents: read
-  pages: write
+  contents: write
   id-token: write
 
 # Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
@@ -26,38 +25,42 @@ defaults:
     shell: bash
 
 jobs:
-  # Build job
-  build:
+  deploy:
     runs-on: ubuntu-latest
+    env:
+      DEPLOY_DIR: _site/
+      DEPLOY_BRANCH: gh-pages
     steps:
       - name: Checkout
         uses: actions/checkout@v3
         with:
           submodules: recursive
-      - name: Setup Pages
-        id: pages
-        uses: actions/configure-pages@v3
+
+      - name: Prepare deployment branch
+        run: |
+          mkdir "${DEPLOY_DIR}"
+          cd "${DEPLOY_DIR}"
+          # Clone and checkout existing branch, or initialise with a new and empty branch
+          git clone --depth 5 --branch "${DEPLOY_BRANCH}" "https://github.com/${GITHUB_REPOSITORY}.git" . || git init -b "${DEPLOY_BRANCH}"
+
       - name: Install Node.js dependencies
         run: npm ci
+
       - name: Build with Eleventy
         env:
-          NODE_ENV: production
+          NODE_ENV: development
           NODE_OPTIONS: '--max_old_space_size=4096'
-        run: npm run build -- --pathprefix="${{ steps.pages.outputs.base_path }}/"
-        # run: npm run build -- --pathprefix="/bugs.jqueryui.com/"
-      - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
-        with:
-          path: ./_site
+        run: npm run build -- --pathprefix="/bugs.jqueryui.com/"
 
-  # Deployment job
-  deploy:
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-    runs-on: ubuntu-latest
-    needs: build
-    steps:
-      - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v2
+      - name: Push to branch
+        # Inspired by https://github.com/helaili/jekyll-action/blob/2.2.0/entrypoint.sh
+        env:
+          GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
+        run: |
+          cd "${DEPLOY_DIR}"
+          touch .nojekyll
+          git config user.name "${GITHUB_ACTOR}" && \
+          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com" && \
+          git add . && \
+          git commit --allow-empty -m "Build commit ${GITHUB_SHA}" && \
+          git push "https://${GITHUB_ACTOR}:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git" "HEAD:${DEPLOY_BRANCH}"

package.json

@@ -4,7 +4,7 @@
   "description": "Static archive of the old bugs.jqueryui.com trac site, built with eleventy.",
   "scripts": {
     "clean": "rimraf _site/",
-    "build": "npm run clean && npx @11ty/eleventy",
+    "build": "npx @11ty/eleventy",
     "postbuild": "npm run searchindex",
     "start": "npm run clean && cross-env NODE_ENV=development npx @11ty/eleventy --serve --quiet",
     "debug": "npm run clean && DEBUG=Eleventy* npx @11ty/eleventy",