Merge pull request #8 from mattmoor/master

Update google/debian:wheezy to use the latest packages, strip apt lists.
Revert "Update google/debian:wheezy to use the latest packages, strip apt lists."
Merge pull request #10 from GoogleCloudPlatform/revert-8-master

Revert "Update google/debian:wheezy to use the latest packages, strip ap...
switch to bz2

workaround to https://github.com/docker/docker/issues/9576
Merge pull request #11 from proppy/master

switch to bz2