This container can be pulled via:
  docker pull registry.opensuse.org/home/mczernek/containers/opensuse_factory_containerfile/opensuse/example:8.1
  docker pull registry.opensuse.org/home/mczernek/containers/opensuse_factory_containerfile/opensuse/example:8.1.8.168
  docker pull registry.opensuse.org/home/mczernek/containers/opensuse_factory_containerfile/opensuse/example:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.