ubuntu - 如何在一个Docker容器里安装Discourse

Cannot connect to the docker daemon - verify it is running and you have access

以上是错误提示

更具 此文安装 url

信息面板如下

root@tuucai:/var/discourse# sudo docker -v 
Docker version 1.8.1, build d12ea79
root@tuucai:/var/discourse# service docker.io status
docker.io stop/waiting
root@tuucai:/var/discourse# service docker.io start
docker.io start/running, process 13742
root@tuucai:/var/discourse# ln -sf /usr/bin/docker.io /usr/local/bin/docker
root@tuucai:/var/discourse# nano containers/app.yml
root@tuucai:/var/discourse#  ./launcher bootstrap app
Cannot connect to the docker daemon - verify it is running and you have access
root@tuucai:/var/discourse#