sample playbook to update os and install docker

os_update_docker.yml

--- 
- name: OS update and install docker
  hosts: localhost
  become: yes
  tasks:
  - name: Remove useless packages from the cache
    apt:
      autoclean: yes
  - name: remove unrequired packages
     apt:
       autoremove: yes
  - name: Upgrade all packages on servers
    apt:
      upgrade: dist
      force_apt_get: yes
      update_cache: yes
      cache_valid_time: 600
  - name: Disable SWAP
    shell: swapoff -a
  - name: Disable SWAP in fstab 
    replace:
      path: /etc/fstab
      regexp: '^([^#].*?\sswap\s+sw\s+.*)$'
      replace: '# \1'
  - name: Install required system packages
    apt: 
      name: "{{ item }}" 
      state: latest 
      update_cache: yes
    loop: [ 'apt-transport-https', 'ca-certificates', 'curl', 'software-properties-common', 'nfs-common']
  - name: Add Docker GPG apt Key
    apt_key:
      url: https://download.docker.com/linux/ubuntu/gpg
      state: present
  - name: Add Docker Repository
    apt_repository:
      repo: deb https://download.docker.com/linux/ubuntu bionic stable
      state: present
  - name: Update apt and install docker-ce
    apt: 
      update_cache: yes 
      name: docker-ce 
      state: latest
  - name: enable and start docker service 
    systemd:
      name: docker
      daemon_reload: true
      enabled: yes
      masked: no
      state: restarted