This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/leap:15
  docker pull registry.opensuse.org/opensuse/leap:15.4
  docker pull registry.opensuse.org/opensuse/leap:15.4.4.75
  docker pull registry.opensuse.org/opensuse/leap:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.