bypass "make docker-push" before merging PRs

Change-Id: I6d46c5a368d9fc00ec891dafac3cbba50752051b

Author: andmat900

.github/workflows/generate-manifest.yml

@@ -36,7 +36,11 @@ jobs:
           [ "$VERSION" == "main" ] && VERSION=$(echo ${{ github.sha }} | cut -c1-8)
           echo IMAGE_ID=$IMAGE_ID
           echo VERSION=$VERSION
-          make docker-build docker-push split-installer IMG=$IMAGE_ID:$VERSION
+          if [[ "${{ github.repository_owner }}" == "${{ github.actor }}" && "${{ github.ref }}" == "refs/heads/main" ]]; then
+            make docker-build docker-push split-installer IMG=$IMAGE_ID:$VERSION
+          else
+            make docker-build split-installer IMG=$IMAGE_ID:$VERSION
+          fi
           mkdir -p manifests/controller
           cp dist/* manifests/controller/
       - name: Commit changes