震惊！docker镜像还有这些知识，你都知道吗？----镜像(二)

镜像查看

查看镜像

[root@hmm-docker ~]# docker images
REPOSITORY#镜像仓库   TAG #标签      IMAGE ID#镜像id       CREATED #创建时间       SIZE#大小
my-hello     latest    6d0c09473a66   20 hours ago   861kB
ubuntu       latest    3db8720ecbf5   3 weeks ago    77.9MB
httpd        latest    2776f4da9d55   7 weeks ago    167MB
ubuntu       18.04     f9a80a55f492   9 months ago   63.2MB
centos       latest    5d0da3dc9764   2 years ago    231MB
ubuntu       14.04     13b66b487594   2 years ago    197MB

查看镜像的摘要值

[root@hqs-docker ~]# docker images ubuntu  --digests
REPOSITORY   TAG       DIGEST                                                                    IMAGE ID       CREATED        SIZE
ubuntu       latest    sha256:f9d633ff6640178c2d0525017174a688e2c1aef28f0a0130b26bd5554491f0da   3db8720ecbf5   3 weeks ago    77.9MB
ubuntu       18.04     sha256:152dc042452c496007f07ca9127571cb9c29697f42acbfad72324b2bb2e43c98   f9a80a55f492   9 months ago   63.2MB
ubuntu       14.04     <none>                                                                    13b66b487594   2 years ago    197MB

查看镜像完整id

[root@hqs-docker ~]# docker images ubuntu  --no-trunc
REPOSITORY   TAG       IMAGE ID                                                                  CREATED        SIZE
ubuntu       latest    sha256:3db8720ecbf5f5927d409cc61f9b4f7ffe23283917caaa992f847c4d83338cc1   3 weeks ago    77.9MB
ubuntu       18.04     sha256:f9a80a55f492e823bf5d51f1bd5f87ea3eed1cb31788686aa99a2fb61a27af6a   9 months ago   63.2MB
ubuntu       14.04     sha256:13b66b487594a1f2b75396013bc05d29d9f527852d96c5577cc4f187559875d0   2 years ago    197MB

自定义镜像模板输出

• 输出json模式

[root@hqs-docker ~]# docker images centos  --format json
{"Containers":"N/A","CreatedAt":"2021-09-16 02:20:05 +0800 CST","CreatedSince":"2 years ago","Digest":"\u003cnone\u003e","ID":"5d0da3dc9764","Repository":"centos","SharedSize":"N/A","Size":"231MB","Tag":"latest","UniqueSize":"N/A","VirtualSize":"231.3MB"}

• 自定义输出模板

[root@hqs-docker ~]# docker images centos  --format "{{.Repository}}---{{.Tag}}"
centos---latest
[root@hqs-docker ~]# docker images  --format "{{.Repository}}--{{.Tag}}--{{.Size}}"
my-hello--latest--861kB
ubuntu--latest--77.9MB
httpd--latest--167MB
ubuntu--18.04--63.2MB
centos--latest--231MB
ubuntu--14.04--197MB
[root@hqs-docker ~]# docker images  --format "{{.Repository}}:{{.Tag}}:{{.Size}}"
my-hello:latest:861kB
ubuntu:latest:77.9MB
httpd:latest:167MB
ubuntu:18.04:63.2MB
centos:latest:231MB
ubuntu:14.04:197MB****

只显示镜像id，方便批量操作

[root@hqs-docker ~]# docker images -q
6d0c09473a66
3db8720ecbf5
2776f4da9d55
f9a80a55f492
5d0da3dc9764
13b66b487594

镜像条件筛选

• dangling:标识为空的镜像，值有true和false两种

[root@hmm-docker ~]# docker image ls  --filter dangling=true
REPOSITORY   TAG       IMAGE ID   CREATED   SIZE
[root@hmm-docker ~]# docker image ls  --filter dangling=false
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
my-hello     latest    6d0c09473a66   20 hours ago   861kB
ubuntu       latest    3db8720ecbf5   3 weeks ago    77.9MB
httpd        latest    2776f4da9d55   7 weeks ago    167MB
ubuntu       18.04     f9a80a55f492   9 months ago   63.2MB
centos       latest    5d0da3dc9764   2 years ago    231MB
ubuntu       14.04     13b66b487594   2 years ago    197MB

• before：根据时间过滤，某个镜像构建之前的镜像

[root@hmm-docker ~]# docker image ls --filter before=6d0c09473a66
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
ubuntu       latest    3db8720ecbf5   3 weeks ago    77.9MB
httpd        latest    2776f4da9d55   7 weeks ago    167MB
ubuntu       18.04     f9a80a55f492   9 months ago   63.2MB
centos       latest    5d0da3dc9764   2 years ago    231MB
ubuntu       14.04     13b66b487594   2 years ago    197MB
[root@hmm-docker ~]# docker image ls --filter before=ubuntu
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
httpd        latest    2776f4da9d55   7 weeks ago    167MB
ubuntu       18.04     f9a80a55f492   9 months ago   63.2MB
centos       latest    5d0da3dc9764   2 years ago    231MB
ubuntu       14.04     13b66b487594   2 years ago    197MB
[root@hmm-docker ~]# docker image ls --filter before=ubuntu:18.04
REPOSITORY   TAG       IMAGE ID       CREATED       SIZE
centos       latest    5d0da3dc9764   2 years ago   231MB
ubuntu       14.04     13b66b487594   2 years ago   197MB

• since:根据时间过滤，某个镜像构建之后的镜像

[root@hmm-docker ~]# docker image ls --filter since=ubuntu:18.04
REPOSITORY   TAG       IMAGE ID       CREATED        SIZE
my-hello     latest    6d0c09473a66   20 hours ago   861kB
ubuntu       latest    3db8720ecbf5   3 weeks ago    77.9MB
httpd        latest    2776f4da9d55   7 weeks ago    167MB

• label:根据标签过滤

[root@hmm-docker docker-hello]# docker images --filter label=name
REPOSITORY     TAG       IMAGE ID       CREATED        SIZE
hello-label2   latest    c0dd54a49365   20 hours ago   861kB
hello-label    latest    7bb17936061a   20 hours ago   861kB
hello-label3   latest    fef21c202867   20 hours ago   861kB

批量删除镜像

• 通过shell命令替换dockeriamges命令可以解决镜像的批量操作

docker images -f label=name -q
docker image rm $(docker images -f label=name -q)

• 如果要删除本地所有的镜像通常会如下操作

docker rmi $(docker images -q)