This container can be pulled via:
  docker pull registry.opensuse.org/home/defolos/bci/staging/sle-15-sp6/6-1050/containerfile/suse/rmt-server:2.17
  docker pull registry.opensuse.org/home/defolos/bci/staging/sle-15-sp6/6-1050/containerfile/suse/rmt-server:2.17-1.53

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.