---
- name: Remove depot docker version
  apt: 
    name: "{{ item }}"
    state: absent
  with_items:
    - docker 
    - docker-engine
    - docker.io

- name: Install tool to use apt with https
  apt: 
    name: "{{ item }}"
    state: present
  with_items:
    - apt-transport-https
    - ca-certificates

- name: Add Docker apt key.
  apt_key:
    url: https://download.docker.com/linux/ubuntu/gpg
    id: 9DC858229FC7DD38854AE2D88D81803C0EBFCD88
    state: present
    #   register: add_repository_key
    # 
    # - name: Ensure curl is present.
    #   package: 
    #     - name: curl
    #     - state: present
    #   when: add_repository_key is failed
    # 
    # - name: Add Docker apt key (alternative for older systems without SNI).
    #   shell: "curl -sSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -"
    #   args:
    #     warn: no
    #   when: add_repository_key is failed

- name: Add Docker repository.
  apt_repository:
    repo: deb https://apt.dockerproject.org/repo debian-stretch main
    state: present
    update_cache: yes

- name: Install docker-ce
  apt: 
    name: docker-ce
    state: present