This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/3.7/test_manifest_images/3.7/edge-image-builder:1.3.3.1
  docker pull registry.opensuse.org/isv/suse/edge/3.7/test_manifest_images/3.7/edge-image-builder:1.3.3.1-1.4

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.