title: How could I list the images pushed to microk8s built-in registry
body: <p>I installed microk8s and I enabled registry addon
  I am able to push docker images to this registry and I am able to use this images in deployments.</p>
  
  <p>But I'm trying to list images that was already pushed to this registry. How can I do that? Is there an API for that?</p>