Copy docker image between repositories

Question

I have 2 private docker repositories. Is any way how can I copy one image from one repository to the second one?

Answer 1

You can pull the image, tag it and push it to the new registry.

Example:

docker pull old-registry/app:some_tag
docker tag old-registry/app:some_tag new-registry/app:some_tag
docker push new-registry/app:some_tag