（playbook）ubuntu下ansible安装docker

   ---
    - hosts: test
      sudo: yes
      vars:
          apt_packages_ca:
              - apt-transport-https
              - ca-certificates

      tasks:   

       - name: add docker source list file for install docker
         file:
             path: /etc/apt/sources.list.d/docker.list
             state: touch
             owner: root
             mode: 'u+r,g+rw'                                                                         

       - name: write deb url of docker to docker.list
         blockinfile:
             dest: /etc/apt/sources.list.d/docker.list
             marker: ""
             block: |
                 deb https://apt.dockerproject.org/repo ubuntu-trusty main

       - name: add CA certificates and ensure installed
         apt:
             name: "{{ item }}"
             update_cache: yes
         with_items: "{{ apt_packages_ca }}"

       - name: add apt-key of dockers
         apt_key:
             keyserver: p80.pool.sks-keyservers.net
             id: 58118E89F3A912897C070ADBF76221572C52609D

       - name: install docker-engine
         apt:
             name: docker-engine
             state: latest
             force: yes
41   ...

不具备什么实际意义，只是一次练习记录