这本极有用。要看完，测试完。
原生的配置：
- name: Docker Compose is present
get_url:
url: https://github.com/docker/compose/releases/download/1.4.1/docker-compose-Linux-x86_64
dest: /usr/local/bin/docker-compose
tags: [docker]
因为老是超时，所以更改为如下的红字，先自己CP下来，再CP到VAGRANT中去。
- name: Add Docker repository and update apt cache
apt_repository:
repo: deb https://apt.dockerproject.org/repo ubuntu-trusty main
update_cache: yes
state: present
tags: [docker]
- name: Docker is present
apt:
name: docker-engine
state: latest
force: yes
tags: [docker]
- name: Python-pip is present
apt: name=python-pip state=present
tags: [docker]
- name: Docker-py is present
pip: name=docker-py version=0.4.0 state=present
tags: [docker]
- name: Docker Compose is present
copy: src=/vagrant/docker-compose-Linux-x86_64 dest=/usr/local/bin/docker-compose
tags: [docker]
- name: Docker Compose permissions are set
file:
path: /usr/local/bin/docker-compose
mode: 0755
tags: [docker]