This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/leap-micro/5.2/toolbox:11.1
  docker pull registry.opensuse.org/opensuse/leap-micro/5.2/toolbox:11.1-2.53
  docker pull registry.opensuse.org/opensuse/leap-micro/5.2/toolbox:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.