Add GitHub Actions workflow for documentation generation

Author: cak

.github/workflows/docs.yml

@@ -0,0 +1,110 @@
+name: CI Docs
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build-docs:
+    name: "Build Docs"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          fetch-depth: 0 # Full history for accurate page timestamps
+
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.11"
+
+      - name: Install package and dependencies
+        run: |
+          python -m pip install uv
+          uv sync
+          uv pip install great-docs
+
+      - name: Set up Quarto
+        uses: quarto-dev/quarto-actions/setup@v2
+
+      - name: Build docs
+        run: uv run great-docs build
+
+      - name: Save docs artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: docs-html
+          path: great-docs/_site
+          include-hidden-files: true
+
+      - name: Upload build timings
+        uses: actions/upload-artifact@v7
+        with:
+          name: build-timings
+          path: great-docs/_site/build-timings.json
+
+  publish-docs:
+    name: "Publish Docs"
+    runs-on: ubuntu-latest
+    needs: "build-docs"
+    if: github.ref == 'refs/heads/main'
+    permissions:
+      pages: write
+      id-token: write
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - uses: actions/download-artifact@v7
+        with:
+          name: docs-html
+          path: great-docs/_site
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v5
+        with:
+          path: great-docs/_site
+          include-hidden-files: true
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v5
+
+  preview-docs:
+    name: "Preview Docs"
+    runs-on: ubuntu-latest
+    needs: "build-docs"
+    if: github.event_name == 'pull_request'
+    permissions:
+      deployments: write
+      pull-requests: write
+    steps:
+      - uses: actions/download-artifact@v7
+        with:
+          name: docs-html
+          path: great-docs/_site
+
+      # Start deployment
+      - name: Configure pull release name
+        if: ${{ github.event_name == 'pull_request' }}
+        run: |
+          echo "RELEASE_NAME=pr-${{ github.event.number }}" >> $GITHUB_ENV
+
+      - name: Configure branch release name
+        if: ${{ github.event_name != 'pull_request' }}
+        run: |
+          # use branch name, but replace slashes. E.g. feat/a -> feat-a
+          echo "RELEASE_NAME=${GITHUB_REF_NAME//\//-}" >> $GITHUB_ENV
+
+      # Deploy
+      - name: Create Github Deployment
+        uses: bobheadxi/deployments@v1
+        id: deployment
+        if: ${{ !github.event.pull_request.head.repo.fork }}
+        with:
+          step: start
+          token: ${{ secrets.GITHUB_TOKEN }}
+          env: ${{ env.RELEASE_NAME }}
+          ref: ${{ github.head_ref }}
+          logs: "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"