This container can be pulled via:
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/cilium:1.5.5
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/cilium:1.5.5-6.39
  docker pull registry.opensuse.org/devel/kubic/containers/container/kubic/cilium:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.