docker镜像常用命令及解析

Docker的常用命令
帮助命令
docker version

docker info

docker --help

镜像命令
docker images

REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
hello-world latest 9f5834b25059 14 months ago 1.84 kB

• REPOSITORY：表示镜像的仓库源
• TAG：镜像的标签
• IMAGE ID：镜像ID
• CREATED：镜像创建时间
• SIZE：镜像大小

docker search 搜索某个镜像名称（从http://hub.docker.com）

>> docker search tomcat
NAME                  DESCRIPTION                         STARS     OFFICIAL   AUTOMATED
tomcat                Apache Tomcat is an open source implementa...   2659      [OK]       
tomee                 Apache TomEE is an all-Apache Java EE cert...   75        [OK]       
dordoka/tomcat        Ubuntu 14.04, Oracle JDK 8 and Tomcat 8 ba...   53        [OK]
bitnami/tomcat        Bitnami Tomcat Docker Image                     31        [OK]
kubeguide/tomcat-app  Tomcat image for Chapter 1                      28        [OK]

docker pull 镜像名称[:TAG]下载镜像

[root@hadoop1 /]# docker pull tomcat
latest: Pulling from tomcat
ed7bc7435c95: Pull complete
......
Digest: sha256:613e0884313f0da2e3b536c0c1c1850a9df405055e78320eb24b1559b708fa3c
Status: Downloaded newer image for tomcat:latest

docker rmi 镜像名称[:TAG]删除镜像