Update branch name in workflow configuration (#869)

.github/workflows/container.yaml

@@ -3,7 +3,7 @@ name: Publish Containers
 on:
   push:
     branches:
-      - main
+      - main-1.x
   release:
     types: [published]
   workflow_dispatch:
@@ -92,4 +92,4 @@ jobs:
         with:
           subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
           subject-digest: ${{ steps.push.outputs.digest }}
-          push-to-registry: true
+          push-to-registry: true