Ansible role for install and start Docker

main.yml

- name: install dependencies
  become: true
  become_user: root
  apt:
    name:
      - apt-transport-https
      - ca-certificates
      - curl
      - gnupg2
      - software-properties-common
      - lsb-release
    state: latest

- name: add Docker's official GPG key
  become: true
  become_user: root
  apt_key:
    url: https://download.docker.com/linux/ubuntu/gpg
    state: present

- command: lsb_release -cs
  register: dist_codename

- name: add repository
  apt_repository:
    repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ dist_codename.stdout }} stable"
    state: present

- name: install Docker
  become: true
  become_user: root
  apt:
    name: docker-ce
    state: latest

- name: ensure started, enable on boot
  become: true
  become_user: root
  service:
    name: docker
    state: started
    enabled: yes