环境介绍: Docker版本:1.5.0 镜像:docker.io:centos latest 操作步骤: 1.启动镜像 docker run -ti centos /bin/bash 2.安装passwd yum install passwd -y 3.修改Centos root密码 # passwd Changing password for user root. New password: BAD PASSWORD: The password is shorter than charact