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:13-139.4
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/postgres:13.15
  docker pull registry.opensuse.org/devel/bci/tumbleweed/containerfile/opensuse/postgres:13.15-139.4

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.