myyk/docker-squash repository overview

⁠docker-squash

This works exactly like the native version of docker-squash so familiarize yourself with it's docs at https://github.com/jwilder/docker-squash⁠.

The main difference is you'll need to swap out the sudo docker-squash command for docker run -v /tmp -i myyk/docker-squash and optionally add volumes for you inputs/outputs.

So if before you had:

$ docker save <image id> > image.tar
$ sudo docker-squash -i image.tar -o squashed.tar
$ cat squashed.tar | docker load
$ docker images <new image id>

Now you'll have:

$ docker save <image id> > input/image.tar
$ docker run -v $(pwd)/input/image.tar -v $(pwd)/output:/output -v /tmp -i myyk/docker-squash -i input/image.tar -o output/squashed.tar
$ cat output/squashed.tar | docker load
$ docker images <new image id>

I've confirmed this works from OS X (Yosemite) with docker-machine and from Ubuntu (Trusty).