This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/samba-server:4.22.6
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/samba-server:4.22.6-3.1792

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.