auto deploy after build

Author: fitztrev

.github/workflows/image.yml

@@ -45,3 +45,13 @@ jobs:
           cache-to: type=gha,mode=max
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+  deploy:
+    if: github.repository_owner == 'lichess-org' && github.ref_name == github.event.repository.default_branch
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: deploy
+        env:
+          DEPLOY_WEBHOOK_URL: ${{ secrets.DEPLOY_WEBHOOK_URL }}
+        run: curl -X POST $DEPLOY_WEBHOOK_URL