Docker学习与实践（二）
二、使用镜像1.获取镜像
# docker pull ubuntu:16.04
16.04: Pulling from library/ubuntu
22dc81ace0ea: Pull complete
1a8b3c87dba3: Pull complete
91390a1c435a: Pull complete
07844b14977e: Pull complete
b78396653dae: Pull complete
Digest: sha256:e348fbbea0e0a0e73ab0370de151e7800684445c509d46195aef73e090a49bd6
Status: Downloaded newer image for ubuntu:16.04
2.查看获取的镜像
# docker image ls
#使用--help可以查看参数选项，比如自己定义显示的列
# docker image ls --format "table {{.ID}}\t{{.Repository}}\t{{.Tag}}"
IMAGE ID REPOSITORY TAG
f975c5035748 ubuntu 16.04
f2a91732366c hello-world latest
#查看空间的占用
# docker system df
3.删除镜像
#删除本地镜像可以使用镜像短ID、长ID、镜像名或镜像摘要来删除
# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu 16.04 f975c5035748 7 days ago 112MB
centos latest 2d194b392dd1 8 days ago 195MB
mysql latest 5d4d51c57ea8 2 weeks ago 374MB
nginx latest e548f1a579cf 3 weeks ago 109MB
hello-world latest f2a91732366c 3 months ago 1.85kB
# docker image rm 5d4
# docker image rm nginx
# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
ubuntu 16.04 f975c5035748 7 days ago 112MB
centos latest 2d194b392dd1 8 days ago 195MB
hello-world latest f2a91732366c 3 months ago 1.85kB
#还可以使用docker image ls命令来配合
docker image rm $(docker image ls -q ubuntu)
docker image rm $(docker image ls -q -f before=centos)
#学习文档地址：https://github.com/yeasy/docker_practice/blob/master/SUMMARY.md
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