This container can be pulled via:
  docker pull registry.opensuse.org/kubic/kube-apiserver:latest
  docker pull registry.opensuse.org/kubic/kube-apiserver:v1.37.1
  docker pull registry.opensuse.org/kubic/kube-apiserver:v1.37.1-6.146

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.