nginx:1.27 is already on this machine. Find out what its name expands to, then give it names for two other registries.

Pull it again to see the full reference on the last line:

Add two names. Nothing is uploaded; docker tag only writes a name.

docker tag nginx:1.27 localhost:5000/web/nginx:1.27
docker tag nginx:1.27 registry.pier.internal/web/nginx:stable

Compare the rows:

List every name the image has:

docker image inspect -f '{{json .RepoTags}}' nginx:1.27

Answer the questions from what the terminal shows.