This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:18-contrib
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:18.3-contrib
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/postgres:18.3-contrib-12.4

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.