Docker: mountpoint for cpu not found

在ubuntu 上安装 docker 的时候, 运行容器的时候一直报 mountpoint for cpu not found  的错误。

解决办法：

    

sudo service docker stop
sudo wget -O /etc/init/docker.conf https://raw.github.com/dotcloud/docker/master/contrib/init/upstart/docker.conf
sudo service docker start

https://github.com/docker/docker/issues/7993