This container can be pulled via:
  docker pull registry.opensuse.org/home/defolos/bci/staging/sle-15-sp6/sle15-sp6-cqqjl/images/bci/bci-busybox:15.6
  docker pull registry.opensuse.org/home/defolos/bci/staging/sle-15-sp6/sle15-sp6-cqqjl/images/bci/bci-busybox:15.6.1.65

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.