This container can be pulled via:
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/postgres:13
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/postgres:13.21
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/postgres:13.21-281.16

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.