在线安装

curl -sSL https://get.daocloud.io/docker | sh
systemctl start docker && systemctl enable docker && systemctl status docker

离线安装

# yum-util 提供yum-config-manager功能，另外两个是devicemapper驱动依赖的
yum install -y yum-utils device-mapper-persistent-data lvm2
# 设置yum源
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 查看所有仓库中所有docker版本，并选择特定版本安装
yum list docker-ce --showduplicates | sort -r
# 获取rpm包以及相关依赖
yum install --downloaddir=/opt/docker/ --downloadonly docker-ce-18.06.0.ce

# 将/opt/docker/复制到目标机器
rpm -ivhU * --nodeps --force
systemctl status docker && systemctl enable docker && systemctl status docker

卸载docker

sudo yum remove docker docker-common container-selinux docker-selinux docker-engine
# 删除镜像,网络,存储卷等文件
rm -rf /var/lib/docker/