ci: Deploy PR as temporary page

Signed-off-by: Patrick José Pereira <[email protected]>

.github/workflows/ci.yml

@@ -2,11 +2,17 @@ name: CI
 
 on:
   workflow_dispatch:
-  pull_request:
   push:
   schedule:
   # Run every 6 days to help us stay on our toes
   - cron: '0 0 */6 * *'
+  # Required for write permission in a PR
+  pull_request_target:
+    branches: ["master"]
+
+permissions:
+  id-token: write
+  pages: write
 
 jobs:
   test:
@@ -35,6 +41,13 @@ jobs:
           xvfb-run --auto-servernum bun test:ci
 
   deploy-page:
+    environment:
+      name: 'Pages Preview'
+      url: ${{ steps.preview_deployment.outputs.page_url }}
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
     needs: test
     runs-on: ubuntu-latest
     steps:
@@ -51,14 +64,28 @@ jobs:
         run: |
           bun install --frozen-lockfile
           bun run build
+          # This will be used by the deployment PR action
+          cp -r dist ./_site
 
       - name: Deploy 🚀
         uses: JamesIves/[email protected]
-        if: success() && github.event_name != 'pull_request'
         with:
           branch: gh-pages
           folder: dist
 
+      - name: Setup Pages
+        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5
+
+      - name: Upload artifact for preview
+        # Automatically uploads an artifact from the './_site' directory by default
+        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3
+
+      - name: Deploy PR preview 🚀
+        id: preview_deployment
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4
+        with:
+          preview: 'true'
+
   deploy-electron:
     needs: test
     runs-on: ${{ matrix.os }}