The docker repositories contains multiple images. Is it possible to just pull the specific image from Repository.
When I use:
docker pull ubuntu
It pulls down around 8-10 different versions of ubuntu.
If there's a specific image that's tagged, you could use the --tag= (or -t) operator to pull the specific image you're looking for. There's a shorthand form for the command as well, which uses just a colon between the image name and the tag.
So if you want the version of ubuntu that's tagged as quantal, you could use:
docker pull ubuntu:quantal
The longer forms would be:
docker pull --tag="quantal" ubuntu
docker pull --t quantal ubuntu
This will still pull the historical layers used to build the final image, but will be a smaller subset than all of the layers for ubuntu.
[Updated to include Ben's note on shorthand from below. Thanks!]
You can also use
docker pull reponame:tagname
docker pull ubantu:quantal
来源：https://stackoverflow.com/questions/22428237/how-to-pull-a-single-image-from-any-docker-repository