Merge pull request #3100 from JohnStrunk/fix-ci-docker

Fix failing CI when not tagging a docker image

Author: sgoggins

.github/workflows/build_docker.yml

@@ -71,7 +71,8 @@ jobs:
           file: ./docker/${{ matrix.image }}/Dockerfile
           labels: ${{ steps.meta.outputs.labels }}
           platforms: linux/amd64
-          push: ${{ github.event_name != 'pull_request' }}
+          # Only push if we've tagged the image in the metadata step
+          push: ${{ github.event_name != 'pull_request' && steps.meta.outputs.tags != '' }}
           tags: ${{ steps.meta.outputs.tags }}
           cache-from: type=gha,scope=container-${{ matrix.image }}
           cache-to: type=gha,scope=container-${{ matrix.image }},mode=max