建立
修改已有映像檔
$ sudo docker run -t -i training/sinatra /bin/bash
root@0b2616b0e5a8:/#root@0b2616b0e5a8:/# gem install json$ sudo docker commit -m "Added json gem" -a "Docker Newbee" 0b2616b0e5a8 ouruser/sinatra:v2
4f177bd27a9ff0f6dc2a830403925b5360bfe0b93d476f7fc3231110e7f71b1c$ sudo docker images
REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE
training/sinatra latest 5bc342fa0b91 10 hours ago 446.7 MB
ouruser/sinatra v2 3c59e02ddd1a 10 hours ago 446.7 MB
ouruser/sinatra latest 5db5f8471261 10 hours ago 446.7 MB利用 Dockerfile 建立映像檔
從本機匯入
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