Update publish-docker.yml

Author: adracus

.github/workflows/publish-docker.yml

@@ -20,6 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: docker/metadata-action@v3
+        id: meta
         with:
           images: |
             ghcr.io/${{ github.repository_owner }}/template-operator
@@ -46,4 +47,4 @@ jobs:
           platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}