ffdo-ansible/roles/common-docker/tasks/main.yml

---
- name: ensure docker repository key is installed
  apt_key:
    id: 58118E89F3A912897C070ADBF76221572C52609D
    data: "{{ lookup('file', 'docker.gpg') }}"

- name: ensure docker apt repository is installed
  apt_repository: repo='deb https://apt.dockerproject.org/repo debian-{{ ansible_distribution_release }} main'

- name: ensure /data/docker exists
  file: name=/data/docker state=directory

- name: ensure modified docker.service is installed
  copy: src=docker.service dest=/etc/systemd/system/docker.service

- name: ensure docker is installed
  apt: name=docker-engine install_recommends=no