iojs/build-containers — pull request #11 by wblankenship (2014-12-09 00:56:27+00:00)
Title: Addresses #10 and #2

1. Clears cache when finished with `apt-get install`.
2. All updates and installs are now done on the same layer.
3. `apt-get upgrade` entirely removed.
4. `adduser` -> `useradd` for debian
5. Some generally formatting improvements (indents and such)