roles/docker/tasks/main.yml

---

- name: Prereqs and SSL support for apt for SSL
  become: yes
  apt:
    name: "{{ item }}"
    update_cache: yes
    cache_valid_time: 3600
  with_items:
    - apt-transport-https
    - ca-certificates
    - python-pip

- name: Docker Apt Key
  become: yes
  apt_key:
    data: "{{ lookup('file', 'docker_apt_key.gpg') }}"

- name: Docker repository
  become: yes
  apt_repository:
    repo: "{{ docker_apt_repo }}"

- name: Install docker-ce
  become: yes
  apt:
    name: "docker-ce=17.06.*"
    update_cache: yes
    cache_valid_time: 3600

- name: Docker Exposed via TCP
  become: yes
  lineinfile:
    dest=/etc/default/docker
    state=present
    insertafter='#DOCKER_OPTS'
    line='DOCKER_OPTS="-H unix:///var/run/docker.sock"'
  register: docker_config

- name: Docker Restart
  become: yes
  service:
    name=docker
    state=restarted
  when: docker_config.changed

# docker fails without docker-py, docker-compose >1.9 fails with docker-py installed
- name: Install docker-compose and docker-py
  become: yes
  pip:
    name: "{{ item }}"
  with_items:
    - "docker==2.4.2"
    - "docker-compose==1.14.0"

- name: Make current user part of the Docker group
  become: yes
  user:
    name: "{{ ansible_user_id }}"
    groups: "docker"
    append: yes