步骤
$ sudo su - # 切换到root用户
$ mkdir -p /opt/bin
$ curl -L https://github.com/docker/compose/releases/download/1.5.1/docker-compose-`uname -s`-`uname -m` > /opt/bin/docker-compose
$ chmod +x /opt/bin/docker-compose
最新版地址：https://github.com/docker/compose/releases/
参考
https://www.ericluwj.com/2015/10/20/installing-docker-compose-in-coreos.html
https://gist.github.com/sourcec0de/5cf7d36a5f696c2ffc68
http://stackoverflow.com/questions/29086918/docker-compose-to-coreos
