This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/samba-ad-dc:4.20
  docker pull registry.opensuse.org/opensuse/samba-ad-dc:4.20.1
  docker pull registry.opensuse.org/opensuse/samba-ad-dc:4.20.1-4.243
  docker pull registry.opensuse.org/opensuse/samba-ad-dc:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.