This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/leap/16.0/images/totest/containers/opensuse/leap:16.0
  docker pull registry.opensuse.org/opensuse/leap/16.0/images/totest/containers/opensuse/leap:16.0.6.171

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.