Tag Images to Dockerhub?

What does it mean tagging images in docker hub? Let's see how to to that by command line in linux environment

You can push a new image to this repository using the CLI

docker tag local-image:tagname new-repo:tagname

then you can push to dockerhub:

docker push new-repo:tagname

You can also prune

docker image prune [OPTIONS]

OPTIONS are:

• --all , -a Remove all unused images, not just dangling ones

• --filter Provide filter values (e.g. until=<timestamp>)

• --force , -f Do not prompt for confirmation