This container can be pulled via:
  docker pull registry.opensuse.org/home/defolos/bci/cr/tumbleweed/containerfile/opensuse/postgres:13
  docker pull registry.opensuse.org/home/defolos/bci/cr/tumbleweed/containerfile/opensuse/postgres:13-12.87
  docker pull registry.opensuse.org/home/defolos/bci/cr/tumbleweed/containerfile/opensuse/postgres:13.15
  docker pull registry.opensuse.org/home/defolos/bci/cr/tumbleweed/containerfile/opensuse/postgres:13.15-12.87

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.