This container can be pulled via:
  docker pull registry.opensuse.org/home/kukuk/15.4/container/opensuse/busybox:1.34.1
  docker pull registry.opensuse.org/home/kukuk/15.4/container/opensuse/busybox:1.34.1-150400.6.15
  docker pull registry.opensuse.org/home/kukuk/15.4/container/opensuse/busybox:latest