GitHub broke and deprecated gh-pages branch 8h ago, switch to GitHub …

…Actions deployment

See https://github.com/orgs/community/discussions/130206
See https://docs.github.com/en/pages/getting-started-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site#publishing-with-a-custom-github-actions-workflow

.github/workflows/docs.yaml

@@ -1,21 +1,36 @@
+# Simple workflow for deploying static content to GitHub Pages
 name: Build docs
 
 on:
+  # Runs on pushes targeting the default branch
   push:
-    branches:
-      - "*"
+    # branches: ["main"]
+    branches: ["*"]
 
-jobs:
-  sphinx_docs_to_gh-pages:
-    name: Sphinx docs to gh-pages
-    runs-on: ubuntu-latest
+  # 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
+  id-token: write
 
-    permissions:
-      contents: write
-      pages: write
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
 
+jobs:
+  # Single deploy job since we're just deploying
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
     steps:
-      - name: Checkout code
+      - name: Checkout
         uses: actions/checkout@v4
         with:
           fetch-depth: 0
@@ -28,29 +43,13 @@ jobs:
         run: pdm sync
       - name: Build docs
         run: pdm docs
-      - name: Create .nojekyll in case 'sphinx.ext.githubpages' is not used
-        run: touch "docs/_build/.nojekyll"
-      - name: Set the committer name and email
-        run: |
-          author_name="$(git show --format=%an -s)"
-          author_email="$(git show --format=%ae -s)"
-          git config user.name "$author_name"
-          git config user.email "$author_email"
-      - name: Create gh-pages branch if needed
-        run: |
-          if [[ -z "$(git ls-remote --heads origin gh-pages)" ]]; then
-             echo "Creating gh-pages branch"
-             git checkout --orphan gh-pages
-             git reset --hard
-             git commit --allow-empty -m "First commit to create gh-pages branch"
-             git push origin gh-pages
-             echo "Created gh-pages branch"
-             git checkout "$GITHUB_REF"
-          else
-             echo "Branch gh-pages already exists"
-          fi
-      - name: Commit to gh-pages branch and push
-        run: |
-          git add -f "docs/_build/"
-          git commit -m "From $GITHUB_REF $GITHUB_SHA"
-          git push origin `git subtree split --prefix "docs/_build/" "$GITHUB_REF"`:gh-pages --force
+      - name: Setup Pages
+        uses: actions/configure-pages@v5
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          # Upload docs build directory
+          path: 'docs/_build/'
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4