1、 CentOS 7.5.1804 系统最小化安装，此处省略；
    [root@docker01 ~]# uname -a
    Linux docker013.10.0-862.el7.x86_64 #1 SMP Fri Apr 20 16:44:24 UTC 2018 x86_64 x86_64 x86_64GNU/Linux
    [root@docker01 ~]# cat/etc/redhat-release
    CentOS Linux release 7.5.1804(Core)
    [root@docker01 ~]#

    2、 修改系统默认系统软件包安装源为阿里云镜像仓库；
    Ø 备份默认的源配置文件
    mv/etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
    Ø 下载新的CentOS-Base.repo 到/etc/yum.repos.d
    curl -o/etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

    3、 更新系统软件包；
    [root@docker01 ~]# yum update-y

    4、 安装docker-ce；
    Ø Step1: 安装必要的一些系统工具
    yum install -y yum-utilsdevice-mapper-persistent-data lvm2
    Ø Step2: 添加软件源信息
    yum-config-manager —add-repohttp://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    Ø Step3: 更新并安装 Docker-CE
    yum makecache fast
    yum -y install docker-ce
    Ø Step4: 开启Docker服务
    systemctl restartdocker.service

    5、 校验；
    [root@docker01 ~]# dockerversion
    Client:
    Version: 18.09.0
    API version: 1.39
    Go version: go1.10.4
    Git commit: 4d60db4
    Built: Wed Nov 7 00:48:22 2018
    OS/Arch: linux/amd64
    Experimental: false

    Server: Docker Engine -Community
    Engine:
    Version: 18.09.0
    API version: 1.39 (minimum version 1.12)
    Go version: go1.10.4
    Git commit: 4d60db4
    Built: Wed Nov 7 00:19:08 2018
    OS/Arch: linux/amd64
    Experimental: false
    [root@docker01 ~]# docker info
    Containers: 0
    Running: 0
    Paused: 0
    Stopped: 0
    Images: 0
    Server Version: 18.09.0
    Storage Driver: overlay2
    Backing Filesystem: xfs
    Supports d_type: true
    Native Overlay Diff: true
    Logging Driver: json-file
    Cgroup Driver: cgroupfs
    Plugins:
    Volume: local
    Network: bridge host macvlan null overlay
    Log: awslogs fluentd gcplogs gelf journaldjson-file local logentries splunk syslog
    Swarm: inactive
    Runtimes: runc
    Default Runtime: runc
    Init Binary: docker-init
    containerd version:c4446665cb9c30056f4998ed953e6d4ff22c7c39
    runc version:4fc53a81fb7c994640722ac585fa9ca548971871
    init version: fec3683
    Security Options:
    seccomp
    Profile: default
    Kernel Version:3.10.0-862.14.4.el7.x86_64
    Operating System: CentOS Linux7 (Core)
    OSType: linux
    Architecture: x86_64
    CPUs: 2
    Total Memory: 1.936GiB
    Name: docker01
    ID:J4S2:R5XK:AVDU:U3DO:XRPU:NXV5:WIHR:INN2:KFFN:N7NJ:HSNN:RGRR
    Docker Root Dir:/var/lib/docker
    Debug Mode (client): false
    Debug Mode (server): false
    Registry:https://index.docker.io/v1/
    Labels:
    Experimental: false
    Insecure Registries:
    127.0.0.0/8
    Live Restore Enabled: false
    Product License: CommunityEngine

    6、 完成。