This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/postgres:15
  docker pull registry.opensuse.org/opensuse/postgres:15-15.50
  docker pull registry.opensuse.org/opensuse/postgres:15.7
  docker pull registry.opensuse.org/opensuse/postgres:15.7-15.50

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.