This container can be pulled via:
  docker pull registry.opensuse.org/home/favogt/releasetest/docker/suse/example:5.6
  docker pull registry.opensuse.org/home/favogt/releasetest/docker/suse/example:5.6.1.11
  docker pull registry.opensuse.org/home/favogt/releasetest/docker/suse/example:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.