Setup a docker container and customize it with ansible

Prerequisites

In order for this to work, you must have:

• docker >= 1.10.0
• ansible >= 1.9
• python-jinja2
• python-yaml
• docker-py (install with pip)

For ubuntu, you can copy/paste

 sudo apt-get install ansible python-jinja2 python-yaml
 sudo pip install docker-py

Usage

For DNS local settings to be automatically integrated in /etc/resolv.conf, either :

• add a dns option cf ansible doc in dockerize.yml :

...
volumes: "{{ the_volumes }}"
dns:
  - x.x.x.x
  - y.y.y.y

• edit your /etc/default/docker file :

DOCKER_OPTS="--dns x.x.x.x --dns y.y.y.y"

Copy vars_example.yml in vars.yml and set the parameters

Execute ./launch.sh path_to_save_docker_home_folder

When the execution is over, you can enter the freshly configured docker with ./enter.sh

If something goes wrong (Or you want to freshly restart for whatever reason), you can wipe everything with STOP_AND_DELETE_ALL.sh

What the script does

• build the docker image if you don't have it
• creates a user developer
• no password, sudoer
• same uid of you
• create an instance of the docker image
• mount /tmp/.X11-unix into /tmp/.X11-unix
• set your $DISPLAY variable into docker
• launch ansible

Misc

The graphical capabilities are based on the work of http://fabiorehm.com/blog/2014/09/11/running-gui-apps-with-docker/

Changes

• 2015-04-12
  • ssh is not needed anymore (ansible connection plugin)
  • docker is not a dockerception, but the docker host exposed inside the container (not very secure, but this is for a development environment)