列出镜像列表 ``` docker images ``` 查找镜像 ``` docker search httpd ``` 拉取镜像 ``` docker pull httpd ``` 构建镜像 ``` docker build -t runoob/centos:6.7 . ``` 更新镜像 ``` docker commit -m="has update" -a="runoob" e218edb10161 runoob/ubuntu:v2 ``` 设置镜像标签 ``` docker tag 860c279d2fec runoob/centos:dev ```