前言
好用的镜像
阿里
curl -o /etc/yum.repos.d/Centos7-aliyun.repo https://mirrors.wlnmp.com/centos/Centos7-aliyun-x86_64.repo
科大
curl -o /etc/yum.repos.d/Centos7-ustc.repo https://mirrors.wlnmp.com/centos/Centos7-ustc-x86_64.repo
网易
curl -o /etc/yum.repos.d/Centos7-163.repo https://mirrors.wlnmp.com/centos/Centos7-163-x86_64.repo
腾讯
curl -o /etc/yum.repos.d/Centos7-tencent.repo https://mirrors.wlnmp.com/centos/Centos7-tencent-x86_64.repo
docker missing signature key
安装yum管理工具：
yum install -y yum-utils
yum添加软件源
sudo yum-config-manager \
--add-repo \
https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo
sudo yum makecache fast
sudo yum install docker-ce
密钥问题
yum install --nogpgcheck 即可
