---
- name: Load in local SSH key path
  set_fact:
    my_ssh_key: "/root/.ssh/id_rsa.pub"
  when: inventory_hostname in groups['manager']

- name: Local user has an SSH key
  command: stat {{ my_ssh_key }}
  changed_when: false
  run_once: true
  when: inventory_hostname in groups['manager']

- name: Install python-apt to use ansible apt module
  shell: apt update && apt install -y python-apt

- name: Ensure python and other dependencies are installed.
  apt:
    name:
      - apt-transport-https
      - ca-certificates
      - gnupg
      - python-pip
      #- python-docker
    state: present

- name: pip install docker
  pip:
    name: docker
    state: present

- name: Add docker gpg key
  #shell: wget https://download.docker.com/linux/debian/gpg -O - | apt-key add -
  apt_key: 
    url: "https://download.docker.com/linux/debian/gpg"
    state: present

- name: Add docker stable repository for debian
  apt_repository:
    repo: "deb https://download.docker.com/linux/debian stretch stable"
    state: present

- name: Install lxc & docker
  apt:
    name: 
      - lxc
      - docker
      - docker-ce
      - python-lxc
  when: inventory_hostname in groups['manager']

- name: Install docker on worker nodes
  apt:
    name:
      - docker-ce
  when: inventory_hostname in groups['workers']

- name: Fix docker module missing issue
  command: touch /.dockerenv
  run_once: true
  when: inventory_hostname in groups['workers']
  notify: Restart docker