This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/samba-toolbox:4.19
  docker pull registry.opensuse.org/opensuse/samba-toolbox:4.19.5
  docker pull registry.opensuse.org/opensuse/samba-toolbox:4.19.5-3.1561

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.