Install docker on raspberry pi

hosts.yml

all:
  children:
    raspi:
      ansible_host: <your-raspi-ip-address>
      vars:
        ansible_connection: ssh
        ansible_user: pi
        discovered_interpreter_python: /usr/bin/python3

playbook.yml

---
- hosts: raspi
  become: true

  tasks:
    - name: Install aptitude using apt
      apt: name=aptitude state=latest update_cache=yes force_apt_get=yes

    - name: Install required system packages
      apt: name={{ item }} state=latest update_cache=yes
      loop: [ 'apt-transport-https', 'ca-certificates', 'curl', 'software-properties-common', 'python3-pip', 'python3-setuptools']

    - name: Add Docker GPG apt Key
      apt_key:
        url: https://download.docker.com/linux/raspbian/gpg
        state: present

    - name: Add Docker Repository
      apt_repository:
        repo: deb https://download.docker.com/linux/raspbian stretch stable
        state: present

    - name: Update apt and install docker-ce
      apt: update_cache=yes name=docker-ce state=latest install_recommends=no

    - name: adding user pi to docker group
      user:
        name: pi
        groups: docker
        append: yes

    - name: install docker compose
      pip:
        name: docker-compose