win10@iZ23a3096aqZ:~$ docker versionClient: Version: 1.11.2 API version: 1.23 Go version: go1.5.4 Git commit: b9f10c9 Built: Wed Jun 1 21:47:50 2016 OS/Arch: linux/amd64Cannot connect to the Docker daemon. Is the docker daemon running on this host?win10@iZ23a3096aqZ:~$ docker run hello-worlddocker: Cannot connect to the Docker daemon. Is the docker daemon running on this host?.See 'docker run --help'.
解决方法：
因为我是非root用户，因此需要让你的用户和docker同属于一个组（docker所在的组名一般为docker），可以用 usermod 命令添加到docker组
sudo usermod -aG docker win10
然后登出用户 ctrl+d
重新登陆
再运行一下 docker version
Welcome to Ubuntu 14.04.4 LTS (GNU/Linux 3.13.0-65-generic x86_64) * Documentation: https://help.ubuntu.com/ Welcome to aliyun Elastic Compute Service! Last login: Fri Jun 17 00:05:03 2016 from 222.44.84.3win10@iZ23a3096aqZ:~$ docker version Client: Version: 1.11.2 API version: 1.23 Go version: go1.5.4 Git commit: b9f10c9 Built: Wed Jun 1 21:47:50 2016 OS/Arch: linux/amd64 Server: Version: 1.11.2 API version: 1.23 Go version: go1.5.4 Git commit: b9f10c9 Built: Wed Jun 1 21:47:50 2016 OS/Arch: linux/amd64
再跑一下hello world
win10@iZ23a3096aqZ:~$ docker run hello-worldUnable to find image 'hello-world:latest' locallylatest: Pulling from library/hello-worlda9d36faac0fe: Pull complete Digest: sha256:e52be8ffeeb1f374f440893189cd32f44cb166650e7ab185fa7735b7dc48d619Status: Downloaded newer image for hello-world:latest Hello from Docker.This message shows that your installation appears to be working correctly. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal. To try something more ambitious, you can run an Ubuntu container with: $ docker run -it ubuntu bash Share images, automate workflows, and more with a free Docker Hub account: https://hub.docker.com For more examples and ideas, visit: https://docs.docker.com/engine/userguide/
参考：
http://www.leesven.com/2338.html
https://segmentfault.com/q/1010000005040763
http://blog.163.com/s2006203387@126/blog/static/533199572015111703735423/
http://www.docker.org.cn/book/install/run-docker-without-sudo-30.html