This container can be pulled via:
  docker pull registry.opensuse.org/home/michals/popelnice/15.3/foobar:15.3
  docker pull registry.opensuse.org/home/michals/popelnice/15.3/foobar:15.3.10.20
  docker pull registry.opensuse.org/home/michals/popelnice/15.3/foobar:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.