Install the recent version of lxc-docker on Ubuntu 14.04

If you install the docker.io package on ubuntu 14.04 you will get a fairly old version (0.9.1 at time of writing) while 1.3 is the current version and has a lot of nice features you don't want to miss. So you can install the recent version manually from the docker repos by running curl -sSL https://get.docker.com/ubuntu/ | sudo sh as described in this tutorial.

Automation with SaltStack

If you want to automate this with SaltStack you can use this small salt state:

lxc-docker:
  pkgrepo.managed:
    - name: deb https://get.docker.com/ubuntu docker main
    - keyserver: keyserver.ubuntu.com
    - keyid: 36A1D7869245C8950F966E92D8576A8BA88D21E9
    - require_in:
      - pkg: lxc-docker
  pkg:
    - installed