This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:12
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:12.20
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:12.20-30.5

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.