- name: Install Docker on EC2 instances
  hosts: ec2_instances
  become: yes

  tasks:
    - name: Update yum package manager
      yum:
        name: '*'
        state: latest

    - name: Install Docker
      yum:
        name: docker
        state: present

    - name: Start and enable Docker service
      service:
        name: docker
        state: started
        enabled: yes

    - name: Add ec2-user to the docker group
      user:
        name: ec2-user
        groups: docker
        append: yes