---
# docker_playbook.yml

- hosts: localhost
  become: yes

  pre_tasks:
    - name: define containers facts
      set_fact:
        containers:
          - name:  '{{ DOCKER_NAME }}'
            image: '{{ DOCKER_IMAGE }}'
            init:  '{{ DOCKER_IMAGE_INIT | d("/sbin/init") }}'
      tags:
        - always

  tasks:
    - name: install docker on localhost
      pip:
        name: docker
        extra_args: "--upgrade"

    - name: create docker containers
      docker_container:
        name:    '{{ item.name }}'
        image:   '{{ item.image }}'
        command: '{{ item.init }}'
        state:    started
        privileged: true
        volumes:
          - '/sys/fs/cgroup:/sys/fs/cgroup:ro'
      loop: '{{ containers }}'

    - name: add containers to inventory
      add_host:
        name: '{{ item.name }}'
        groups: docker_containers
        ansible_connection: docker
      changed_when: false
      loop: '{{ containers }}'

- name: run tasks in containers
  hosts: docker_containers
  strategy: free
  become: yes
  roles:
    - { role: ../.. }

- hosts: localhost
  tasks:
    - name: remove docker containers
      docker_container:
        name: '{{ item.name }}'
        state: absent
      loop: '{{ containers }}'
      changed_when: false
      tags:
        - destroy