---
- name: Installing Docker apt repository prerequisites
  apt:
    update_cache: yes
    state: present
    name:
      - apt-transport-https
      - ca-certificates
      - gnupg2
      - software-properties-common

- name: Addding Docker apt repository key
  apt_key: url='https://download.docker.com/linux/debian/gpg' state=present

- name: Adding Docker apt repository sources
  apt_repository: repo='deb [arch=amd64] https://download.docker.com/linux/debian stretch stable' state=present

- name: Installing Docker
  apt:
    update_cache: yes
    state: present
    name:
      - docker-ce
      - docker-compose