目录
1.删除旧版本docker
yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine \
docker-ce
2.联网安装yum工具
yum install -y yum-utils \
device-mapper-persistent-data \
lvm2 --skip-broken
3.更新本地镜像源
yum-config-manager \
--add-repo \
https://mirrors.aliyun.c