Remove explicit Docker tag and label for "catnip" image

* we want to use the "latest" tag just as for the existing public Docker app image

Author: jochenehret

.github/workflows/build-catnip-docker-image.yml

@@ -25,17 +25,10 @@ jobs:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Extract metadata (tags, labels) for Docker
-        id: meta
-        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
-        with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
       - name: Build and push Docker image
         id: push
         uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
         with:
           context: ./assets/catnip/
           file: ./assets/catnip/Dockerfile
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}

helpers/config/config_struct.go

@@ -242,7 +242,7 @@ func getDefaults() config {
 	defaults.PrivateDockerRegistryPassword = ptrToString("")
 	defaults.PublicDockerAppImage = ptrToString("cloudfoundry/diego-docker-app:latest")
 	// TODO use "latest" tag (?)
-	defaults.CatnipDockerAppImage = ptrToString("ghcr.io/cloudfoundry/catnip-app:file-based-service-bindings-docker-app")
+	defaults.CatnipDockerAppImage = ptrToString("ghcr.io/cloudfoundry/catnip-app:latest")
 
 	defaults.UnallocatedIPForSecurityGroup = ptrToString("10.0.244.255")
 
@@ -298,7 +298,6 @@ func validateConfig(config *config) error {
 	err = validateCatnipDockerAppImage(config)
 	if err != nil {
 		errs = errors.Join(errs, err)
-
 	}
 
 	err = validatePrivateDockerRegistry(config)