1、安装Docker

1.1、下载对应的yum源repo

  1.  wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O /etc/yum.repos.d/docker-ce.repo

1.2 yum安装

yum -y install docker-ce-18.06.1.ce-3.el7

1.3、设置开机启动

systemctl enable docker && systemctl start docker

1.4、查看版本

docker --version

1.5、修改docker的镜像地址为国内阿里云

 cat > /etc/docker/daemon.json << EOF
{
  "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"]
}
EOF

1.6、修改工作空間

docker info | grep 'Docker Root Dir'

mkdir -p /home/var/lib/docker

systemctl stop docker 

cp -rf  /var/lib/docker  /home/var/lib


vim /etc/docker/daemon.json

"graph": "/home/var/lib/docker"

systemctl daemon-reload

systemctl restart docker

2、卸载docker

2.1、查询docker安装过的包

yum list installed | grep docker

2.2、删除安装包、删除镜像、容器等

注意事项：如果docker的工资 目录做了迁移需要修改删除目录路径，会有因为默认工作空间不够大去迁移工作空间

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

rm -rf /etc/systemd/system/docker.service.d

rm -rf /home/var/lib/docker

rm -rf /home/var/run/docker