This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/leap:15
  docker pull registry.opensuse.org/opensuse/leap:15.6
  docker pull registry.opensuse.org/opensuse/leap:15.6.5.643
  docker pull registry.opensuse.org/opensuse/leap:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.