在安装docker时报错
failure: repodata/repomd.xml from mirrors.aliyun.com_dockece_linux_centos_docker-ce.repor: [Errno 256] No more mirrors to try. http://mirrors.aliyun.com/dockece/linux/centos/docker-ce.repor/repodata/repomd.xml: [Errno 14] HTTP Error 404…