This container can be pulled via:
  docker pull registry.opensuse.org/kubevirt/sidecar-shim:1.6.0
  docker pull registry.opensuse.org/kubevirt/sidecar-shim:1.6.0-1.1
  docker pull registry.opensuse.org/kubevirt/sidecar-shim:1.6.0.2.746

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.