Ubuntu 14.04 安装 docker

在终端中运行以下命令即可：

sudo apt-get -y install \  apt-transport-https \  ca-certificates \  curlcurl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -sudo add-apt-repository \       "deb [arch=amd64] https://download.docker.com/linux/ubuntu \       $(lsb_release -cs) \       stable"sudo apt-get updatesudo apt-get -y install docker-cesudo docker run hello-world

最后输出以下信息即安装成功：

Unable to find image 'hello-world:latest' locallylatest: Pulling from library/hello-world78445dd45222: Pull completeDigest: sha256:c5515758d4c5e1e838e9cd307f6c6a0d620b5e07e6f927b07d05f6d12a1ac8d7Status: Downloaded newer image for hello-world:latestHello 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 bashShare images, automate workflows, and more with a free Docker ID: https://cloud.docker.com/For more examples and ideas, visit: https://docs.docker.com/engine/userguide/

还可使用which docker来验证，得到结果示例：/usr/bin/docker

参考：https://store.docker.com/editions/community/docker-ce-server-ubuntu