This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:13
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:13.17
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:13.17-31.2

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.