update_demo_index_html.yaml

---
 - hosts: webservers
   remote_user: ubuntu
   become: true

   tasks: 
    - name: copy demo_index.html to remote
      copy:
        src: demo_index.html
        dest: /usr/share/nginx/html/demo_index.html
        backup: yes

    - name: reload nginx
      service: 
        name: nginx 
        state: restarted