This container can be pulled via:
  docker pull registry.opensuse.org/kubevirt/cdi-uploadproxy:1.60.3
  docker pull registry.opensuse.org/kubevirt/cdi-uploadproxy:1.60.3-2.1
  docker pull registry.opensuse.org/kubevirt/cdi-uploadproxy:1.60.3.9.138

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.