This container can be pulled via:
  docker pull registry.opensuse.org/filesystems/ceph/master/upstream/images/rook/ceph:1.2.2
  docker pull registry.opensuse.org/filesystems/ceph/master/upstream/images/rook/ceph:1.2.2.0
  docker pull registry.opensuse.org/filesystems/ceph/master/upstream/images/rook/ceph:1.2.2.0.3.52
  docker pull registry.opensuse.org/filesystems/ceph/master/upstream/images/rook/ceph:latest
  docker pull registry.opensuse.org/filesystems/ceph/master/upstream/images/rook/ceph:leap15.2.upstream

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.