This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/ceph/ceph:16.2.15.74
  docker pull registry.opensuse.org/opensuse/ceph/ceph:16.2.15.74.19.741
  docker pull registry.opensuse.org/opensuse/ceph/ceph:latest
  docker pull registry.opensuse.org/opensuse/ceph/ceph:tumbleweed

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.