Docker image push 到docker hub

先基于一个已经存在的image创建一个container并且进入

docker run  -dit alpine sh
docker ps
docker attach 62

　在container中更新环境做些改变

然后commit这个新的image

docker commit -m "MESSAGE" containerID NewImageName
docker commit -m "Update image" 620 nani/alpine-git

打上tag

docker tag nani/alpine-git:latest nani/alpine-git:v1.0

推送到docker hub

docker login 
docker push nani/alpine-git:v1.0