This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/389-ds:3.1
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/389-ds:3.1-21.121
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/389-ds:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.