Ansible playlist to install docker and set things up

install_docker_playlist.yml

---
- name: Install docker
  hosts: all
  sudo: yes
  tasks:
    - name: add docker apt key
      apt_key: >
        id=2C52609D
        url=https://apt.dockerproject.org/gpg
        state=present

    - name: add docker apt repository
      apt_repository: >
        repo="deb https://apt.dockerproject.org/repo ubuntu-{{ansible_distribution_release}} main"
        state=present
        update_cache=yes

    - name: install docker
      apt: pkg=docker-engine state=latest

    - name: configure docker
      copy: content='DOCKER_OPTS=""'
        dest=/etc/default/docker
      notify: restart docker

    - name: allow vagrant user to run docker commands without sudo
      user: name=vagrant append=yes groups=docker

    - name: install required python packages for ansible and docker
      apt: pkg={{item}} state=latest
      with_items: [python-pip, python-dev]

    # As of ansible v1.9.1, the docker module uses an older version of the docker-py package.
    # https://github.com/ansible/ansible-modules-core/issues/1227
    - name: install the version of docker-py used by ansible
      pip: name=docker-py version=1.1.0

  handlers:
    # I can't use the service module because of an issue with ansible and upstart :(
    # https://github.com/ansible/ansible-modules-core/issues/1170
    - name: restart docker
      command: service docker restart