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In docker, how can one display the current registry info you are currently logged in? I installed docker, if I now do docker push, where does it send my images?
I spend over 30min searching this info from Google and docker docs, and couldn't find it, so I think it deserves its own question.
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Go to the Repositories view and click on a repository to see its tags. Image sizes are the cumulative space taken up by the image and all its parent images. This is also the disk space used by the contents of the . tar file created when you docker save an image.
What it is. The Registry is a stateless, highly scalable server side application that stores and lets you distribute Docker images. The Registry is open-source, under the permissive Apache license. You can find the source code on GitHub.
Docker Hub is Docker's official cloud-based registry for Docker images. As you might expect, since Docker Hub is Docker's official registry, it is the default registry when you install Docker.
Docker Hub official website has been moved to https://registry.hub.docker.com from https://hub.docker.com/.
There's no concept of a "current" registry - full image tags always contain the registry address, but if no registry is specified then the Docker Hub is used as the default.
So docker push user/app pushes to Docker Hub. If you want to push it to a local registry you need to explicitly tag it with the registry address:
docker tag user/app localhost:5000/user/app docker push localhost:5000/user/app If your local registry is secured, you need to run docker login localhost:5000 but that does not change the default registry. If you push or pull images without a registry address in the tag, Docker will always use the Hub.
This issue explains the rationale.
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