// 卸载旧版本[docker镜像使用.md](docker%BE%B5%CF%F1%CA%B9%D3%C3.md)
sudo yum remove docker \[docker镜像使用.md](docker%BE%B5%CF%F1%CA%B9%D3%C3.md)
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine
// 安装依赖
sudo yum install -y yum-utils
// 更换源
sudo yum-config-manager \
--add-repo \
https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io
// 防火墙
firewall-cmd --permanent --zone=trusted --add-interface=docker0
firewall-cmd --reload
// 启动
sudo systemctl start docker