sample ansible playbook for install docker

docker.yml

- hosts: 'master, worker'
  become: yes

  tasks:
    - name: update and install dependencies
      apt:
        name:
          - apt-transport-https
          - ca-certificates
          - curl
          - software-properties-common
        update_cache: yes
    - name: add key repo
      apt_key:
        url: https://download.docker.com/linux/ubuntu/gpg
        state: present
    - name: add docker repo
      apt_repository:
        repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu focal stable"
        state: present
        filename: docker
    - name: install docker-ce
      apt:
        name: docker-ce
        state: present
    - name: make sure docker is running
      ansible.builtin.service:
        name: docker
        state: started