This container can be pulled via:
  docker pull registry.opensuse.org/home/mistermaster/branches/opensuse/templates/images/tumbleweed/containers/opensuse/example:6.3
  docker pull registry.opensuse.org/home/mistermaster/branches/opensuse/templates/images/tumbleweed/containers/opensuse/example:6.3.2.30
  docker pull registry.opensuse.org/home/mistermaster/branches/opensuse/templates/images/tumbleweed/containers/opensuse/example:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.