0. 准备

确保sestatus关闭

# sestatus
SELinux status:                 disabled

1. 源方式安装

添加阿里镜像源
添加官方源

#备份
mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup
#下载新的阿里CentOS-Base.repo 到/etc/yum.repos.d/
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

#Install yum-utils, which provides the yum-config-manager utility
yum install -y yum-utils
#Use the following command to set up the stable repository
yum-config-manager \
    --add-repo \
 https://docs.docker.com/v1.13/engine/installation/linux/repo_files/centos/docker.repo
#Update the yum package index
yum makecache fast


yum list docker-engine.x86_64  --showduplicates |sort -r
yum -y install docker-engine-17.03.1.ce-1.el7.centos
yum -y install docker-engine-1.12.6-1.el7.centos

2. 离线安装

墙内在线安装还是不太靠谱，参考centos官网安装，在这里下载后本地安装。

yum install /data/temp/docker-engine-1.13.1-1.el7.centos.x86_64.rpm

2. 镜像加速

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://afc94bc6.m.daocloud.io

3. 卸载

sudo yum remove docker \
docker-common \
container-selinux \
docker-selinux \
docker-engine

卸载Docker后,/var/lib/docker/目录下会保留原Docker的镜像,网络,存储卷等文件. 如果需要全新安装Docker,需要删除/var/lib/docker/目录

rm -fr /var/lib/docker/

参考
官网文档
CentOS7中配置Docker的yum源并安装
Docker 极速下载