tianon/docker-brew-ubuntu-core — pull request #2 by iemejia (2014-05-06 20:56:16+00:00)
Title: Added configuration to use compressed apt indexes.

It reduces the size of the images using gzip compression for the files
in the folder /var/lib/apt/lists.
Fixes https://github.com/tianon/docker-brew-ubuntu-core/issues/1