I'm using Docker for Mac Version 1.12.0-beta21 (build: 11019) on OS X 10.11.6. The container folder in $HOME/Library/Containers/com.docker.docker contains 3.1 GB of space. docker images -a however only shows one image which is 330 MB.

How can I clean up the container folder, so that it only contains the images I'm able to use?

Update

There is an open issue regarding this problem: https://github.com/docker/for-mac/issues/371

Solution 1:

try:

docker system prune -a

https://docs.docker.com/engine/reference/commandline/system_prune/

Remove all unused containers, networks, images (both dangling and unreferenced), and optionally, volumes.

Solution 2:

Spotify have a useful docker image called docker-gc which will clean up unused images.

As per the Github page for it, you can run it as a container itself:

docker run --rm -v /var/run/docker.sock:/var/run/docker.sock -v /etc:/etc spotify/docker-gc

I have that aliased to docker-gc which I run periodically to clean things up.

Solution 3:

Check the size with this command below:

du -h -d 1  ~/Library/Containers/com.docker.docker 

Restart the default settings on top bar to clean.

Or create a script like this link to don't lose the images.

https://blog.mrtrustor.net/post/clean-docker-for-mac/