This container can be pulled via:
  docker pull registry.opensuse.org/home/ph03nix/containers/images/opensuse/postfix-pgsql:3.9.0
  docker pull registry.opensuse.org/home/ph03nix/containers/images/opensuse/postfix-pgsql:3.9.0-6.1
  docker pull registry.opensuse.org/home/ph03nix/containers/images/opensuse/postfix-pgsql:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.