This container can be pulled via:
  docker pull registry.opensuse.org/isv/suse/edge/3.3/totest/charts/rancher-turtles-airgap-resources:303.0.4_up0.20.0
  docker pull registry.opensuse.org/isv/suse/edge/3.3/totest/charts/rancher-turtles-airgap-resources:303.0.4_up0.20.0-13.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.