[tln]

You might still have it on your dev box or build box

  docker image ls
  docker tag name/name:version your.registry/here/name/name:version
  docker push your.registry/here/name/name:version

[tln]

Per sibling comment, public.ecr.aws/docker/library/.... works even better

[akshayKMR]

This saved me. I was able to push image from one of my nodes. Thank you.