---
- name: reboot machine if required
  # 'all' is okay here, because the fail task will force the user to specify a limit on the command line, using -l or --limit
  hosts: 'all'

  tasks:
    - name: Force limit arg
      include_role:
        name: force_limitArg

    - name: Reboot if required
      include_role:
        name: install_dockerCompose