2、docker镜像操作

#列出本地镜像
->docker images
 
#拉取镜像
->docker pull registry:2.4.1
 
#删除镜像
->docker rmi registry:2.4.1
 
#导出镜像
->docker save -o jenkins.tar.gz jenkins/jenkins
 
#导入镜像
->docker load -i jenkins.tar.gz
 
#修改本地镜像
->docker run -t -i registry:2.4.1 /bin/bash
->[执行修改命令]
->exit
->docker commit -m "[注释]" -a "[作者]" 0b2616b0e5a8 registry:[my-tag]
 
#利用Dokerfile来修改本地镜像
->mkdir ./my-registry
->cd ./my-registry
-> vim ./Dockerfile
#编辑Dockerfile内容
FROM registry:2.4.1
MAINTAINER cyh <cyh@docker.com>
RUN echo 'hello word!'
->docker build -t="cyh/registry:2.4.1" ./
 
 
docker build -t jdk8:141 . -f jdk8-dockerfile
 
docker build -t jdk8-2:141 . -f jdk8-dockerfile