ZoneMinder/ZoneMinder — pull request #390 by hamiltont (2014-04-18 03:05:30+00:00)
Title: Remove apt-get upgrade

Convention is to avoid this if not needed, as there is no init
system and some packages have to be held back. upgrade will
sometimes break due to the state of ubuntu:latest

To see the official issue: dotcloud/docker#1724
To see workarounds: https://github.com/racker/docker-ubuntu-with-updates/blob/master/precise/Dockerfile