Prepare asf-site deployment

.github/workflows/site.yml

@@ -46,12 +46,14 @@ jobs:
       - name: Build Apache Site
         run: site/bin/create-static-site.sh
 
-      - name: Dummy to be removed
-        run: ls -al site/build/apache-site
-
-      - name: Dummy to be removed
-        run: ls -al site/build/apache-site/releases
-
+      # TODO Do we want to deploy from 'asf-site' in the 'polaris-site' repo or in the 'polaris' repo?
+      #   The former requires a secret
       - name: Deploy Static Site to GitHub
-        if: github.event_name == 'push' && github.ref == 'refs/heads/main' && github.repository == 'apache/polaris'
-        run: echo "Deployment work TBD"
+        if: github.event_name == 'push' && github.repository == 'apache/polaris'
+        uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4
+        with:
+          external_repository: apache/polaris-site
+          publish_branch: asf-site
+          deploy_key: ${{ secrets.APACHE_SITE_DEPLOY_KEY }}
+          publish_dir: ./site/build/apache-site
+          cname: polaris.apache.org