---
- hosts: all
  become: true
  vars:
    container_name: nginx
    image_name: nginx

  tasks:
    - name: Pull app image
      docker_image:
        name: "{{ container_name }}"
        source: pull

    - name: Create app container
      docker_container:
        name: "{{ container_name }}"
        image: "{{ image_name }}"
        state: started
        ports:
          - "80:80"