Docker 安装

一、Mac

直接官网：https://www.docker.com/get-started

二、Linux

1. 移除旧版本

yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-selinux docker-engine-selinux docker-engine

2. 安装 Docker 依赖工具

yum install -y device-mapper-persistent-data lvm2

3. 下载 Docker

yum -y install docker

4. 启动 Docker 后台服务

systemctl start docker

5. 运行测试 hello-world

docker run hello-world

由于本地没有 hello-world 这个镜像，所以会下载一个hello-world 的镜像，并在容器内运行。若能正常输出信息，则说明安装成功。

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
256ab8fe8778: Pull complete
Digest: sha256:7f0a9f93b4aa3022c3a4c147a449bf11e0941a1fd0bf4a8e6c9408b2600777c5
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

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6. 查看下载的 hello-world 镜像

docker images

输出：

REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
hello-world         latest              a29f45ccde2a        5 seconds ago        9.14kB