> uname -a # 查看内核版本
Linux VM_0_15_centos 3.10.0-1062.9.1.el7.x86_64 #1 SMP Fri Dec 6 15:49:49 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

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

# 安装依赖包
> yum install -y yum-utils \
           device-mapper-persistent-data \
           lvm2

# 添加yum源,推荐使用阿里云
> yum-config-manager \
    --add-repo \
    https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo 
    
> yum makecache fast # 更新yum源缓存
> yum install docker-ce # 安装docker-ce

> curl -fsSL get.docker.com -o get-docker.sh # 下载安装脚本
> sh get-docker.sh --mirror Aliyun # 安装并配置镜像，使用--mirror选项可以使用国内镜像

> systemctl enable docker # 添加自启动服务
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

> systemctl start docker # 启动

> docker version # 查看安装的版本
Client: Docker Engine - Community
 Version:           19.03.5
 API version:       1.40
 Go version:        go1.12.12
 Git commit:        633a0ea
 Built:             Wed Nov 13 07:25:41 2019
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.5
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.12
  Git commit:       633a0ea
  Built:            Wed Nov 13 07:24:18 2019
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8+dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

> groupadd docker # 建立 docker 组

> usermod -aG docker $USER # 添加当前的用户到用户组

> docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete 
Digest: sha256:9572f7cdcee8591948c2963463447a53466950b3fc15a247fcad1917ca215a2f
Status: Downloaded newer image for hello-world:latest

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

# 下载docker-compose 二进制文件
> curl -L https://github.com/docker/compose/releases/download/1.24.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose

> chmod +x /usr/local/bin/docker-compose # 添加执行权限

> docker-compose --version
docker-compose version 1.24.1, build 4667896b