This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/postgres:13
  docker pull registry.opensuse.org/opensuse/postgres:13-13.53
  docker pull registry.opensuse.org/opensuse/postgres:13.15
  docker pull registry.opensuse.org/opensuse/postgres:13.15-13.53

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.