标签：als 地址 lin digest targe fss sys apt inux
(本文翻译自https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-16-04)
添加GPG Key:
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
添加apt-get源
$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
刷新apt
$ sudo apt-get update
查看apt对docker的下载地址，确保不是原来ubuntu的旧地址：
$ apt-cache policy docker-ce docker-ce: Installed: (none) Candidate: 17.03.1~ce-0~ubuntu-xenial Version table: 17.03.1~ce-0~ubuntu-xenial 500 500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages 17.03.0~ce-0~ubuntu-xenial 500 500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
安装docker：
$ sudo apt-get install -y docker-ce
启动docker：
$ sudo systemctl status docker
检查docker运行状态：
$ sudo systemctl status docker docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled) Active: active (running) since Sun 2016-05-01 06:53:52 CDT; 1 weeks 3 days ago Docs: https://docs.docker.com Main PID: 749 (docker)
一般来说，安装后的docker需要sudo来运行：
$ docker ps Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.37/containers/json: dial unix /var/run/docker.sock: connect: permission denied
执行以下步骤，此后就不需要sudo了。
首先，将你自己加入docker组：
$ sudo usermod -aG docker ${USER}
然后，令改动生效：
$ su - ${USER}
你也可以将其他人加入docker组：
$ sudo usermod -aG docker username
跑个Hello World试试：
$ docker run hello-world Unable to find image ‘hello-world:latest‘ locally latest: Pulling from library/hello-world 9bb5a5d4561a: Pull complete Digest: sha256:f5233545e43561214ca4891fd1157e1c3c563316ed8e237750d59bde73361e77 Status: Downloaded newer image for hello-world:latest Hello from Docker!
大功告成！
标签：als 地址 lin digest targe fss sys apt inux
原文地址：https://www.cnblogs.com/JansenGao/p/how-to-install-docker-on-ubuntu-16-04.html
