This container can be pulled via:
  docker pull registry.opensuse.org/home/dirkmueller/factory/images/opensuse/busybox:1.36.1
  docker pull registry.opensuse.org/home/dirkmueller/factory/images/opensuse/busybox:1.36.1-59.13
  docker pull registry.opensuse.org/home/dirkmueller/factory/images/opensuse/busybox:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.