1、强大的官方文档

1 https://docs.docker.com/engine/installation/linux/centos/

2、按步骤来，先更新yum源，这里用163的源

1 yum install -y wget
2 cd /etc/yum.repos.d
3 wget http://mirrors.163.com/.help/CentOS7-Base-163.repo
4 /usr/bin/yum clean all
5 /usr/bin/yum makecache
6 其他系统自带的源可以保留，也可以全部干掉

3、更新系统

1 yum update

4、如果遇到问题：Delta RPMs disabled because /usr/bin/applydeltarpm not installed.

1 yum install -y deltarpm

5、编辑生成docker的yum源文件

1 tee /etc/yum.repos.d/docker.repo <<-‘EOF’
2 [dockerrepo]
3 name=Docker Repository
4 baseurl=https://yum.dockerproject.org/repo/main/centos/7/
5 enabled=1
6 gpgcheck=1
7 gpgkey=https://yum.dockerproject.org/gpg
8 EOF

6、安装Docker

1 yum install docker-engine

7、如果遇到问题：Public key for docker-engine-selinux-1.10.1-1.el7.centos.noarch.rpm is not installed，执行下面的命令

1 rpm --import https://yum.dockerproject.org/gpg

8、Docker下载速度很慢，请耐心等待

9、安装完成后设置开机自启

1 systemctl enable docker.service

10、启动docker守护进程

1 systemctl start docker

11、查看docker版本

[root@localhost ~]# docker version
Client:
Version: 1.12.3
API version: 1.24
Go version: go1.6.3
Git commit: 6b644ec
Built:
OS/Arch: linux/amd64

Server:
Version: 1.12.3
API version: 1.24
Go version: go1.6.3
Git commit: 6b644ec
Built:
OS/Arch: linux/amd64
12、 Done，enjoy it!

本文出自http://www.cnblogs.com/scoter2008

• ------------------------2019-04-10---------------------------
• ----------------------良心经验，个人测试可行-----------
• ----------------------博主：fager----------------------------