This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/samba-toolbox:4.22.5
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/samba-toolbox:4.22.5-3.1708

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.