Docker：如何访问图像的Dockerfile？

当我运行docker images命令时，我得到如下所示的列表

[root@hadoop01myjavadir]#docker图像

REPOSITORY                   TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
runhelloworld                latest              c49c32235334        18 hours ago        642.2 MB
<none>                       <none>              6eadaac27986        19 hours ago        642.2 MB
<none>                       <none>              ed95cf58873e        25 hours ago        642.2 MB
<none>                       <none>              ebedbfee37fd        25 hours ago        642.2 MB
<none>                       <none>              25453e89b3f0        43 hours ago        0 B
priyankapatil/docker-whale   latest              aa043d321de5        44 hours ago        255.5 MB
helloworld                   latest              aa043d321de5        44 hours ago        255.5 MB
docker-whale                 latest              aa043d321de5        44 hours ago        255.5 MB
java                         latest              3323938eb5a2        9 days ago          642.2 MB
tomcat7                      dockerfile          4b4b09c0dbed        9 days ago          1.289 GB
tomcat7                      dockerfile1         4b4b09c0dbed        9 days ago          1.289 GB
tomcat7                      latest              4b4b09c0dbed        9 days ago          1.289 GB
docker_image                 latest              4b4b09c0dbed        9 days ago          1.289 GB
lastest_docker               latest              4b4b09c0dbed        9 days ago          1.289 GB
tapash1                      latest              4b4b09c0dbed        9 days ago          1.289 GB
<none>                       <none>              866c370a7562        9 days ago          855.3 MB
<none>                       <none>              8ca0c468c6ee        9 days ago          598.8 MB
<none>                       <none>              d5f676fa467b        9 days ago          292.5 MB
<none>                       <none>              459c1c0551e2        9 days ago          265.6 MB
registry                     2                   1fff2b77d9b3        3 weeks ago         224.5 MB
centos                       latest              60e65a8e4030        6 weeks ago         196.6 MB
hello-world                  latest              975b84d108f1        4 months ago        960 B
centos                       centos6             3bbbf0aca359        4 months ago        190.6 MB
docker/whalesay              latest              fb434121fc77        8 months ago        247 MB

存储库标记图像ID已创建虚拟大小
runhelloworld最新版本c49c32235334 18小时前642.2 MB
6eadaac27986 19小时前642.2 MB
ed95cf58873e 25小时前642.2 MB
25小时前的ebedbfee37fd 642.2 MB
25453e89b3f0 43小时前0 B
priyankapatil/docker whale最新版本aa043d321de5 44小时前255.5 MB
helloworld最新版本aa043d321de5 44小时前255.5 MB
docker whale最新版本aa043d321de5 44小时前255.5 MB
java最新版本3323938eb5a2 9天前642.2MB
tomcat7 dockerfile 4B4B09C0DB9天前已加载1.289 GB
tomcat7 dockerfile1 4B4B09C0DB9天前已加载1.289 GB
tomcat7最新4B4B09C0DB9天前发布1.289 GB
docker_图像最新4b4b09c0dbed 9天前1.289 GB
最新docker最新4B4B09C0DB9日前发布1.289 GB
tapash1最新4b4B09c0db9天前发布1.289 GB
866c370a7562 9天前855.3 MB
8ca0c468c6ee 9天前598.8 MB
d5f676fa467b 9天前29250 MB
459c1c0551e2 9天前265.6 MB
3周前的注册表2 1FF2B77D9B3 224.5 MB
centos最新版本60E65A8E430 6周前196.6 MB
hello world最新版本975b84d108f1 4个月前960 B
centos centos6 3bbbf0aca359 4个月前为1906 MB
docker/whalesay最新fb434121fc77 8个月前247 MB

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如何访问此列表中图像的dockerfile？

请参阅centurylinklabs提供的来自图像的dockerfile

docker历史记录

在一张图片上会给你主要的信息，见文档

我写了这个简短的Python脚本，它比图片中的dockerfile要少一点

import subprocess
import sys

def main():

    dockid = sys.argv[1]
    args = ['docker', 'history', dockid]
    proc = subprocess.Popen(args=args, stdout=subprocess.PIPE,
                            stderr=subprocess.STDOUT)
    (stdout, stderr) = proc.communicate() 
    lines = stdout.split('\n')[1:-2]
    lines.reverse()
    for line in lines:
        idlayer = line.split(' ')[0]
        args = ['docker', 'inspect', 
                "--format", "'{{ ((index .ContainerConfig.Cmd ) 0) }}'",
                idlayer]
        proc = subprocess.Popen(args=args, stdout=subprocess.PIPE,
                                stderr=subprocess.STDOUT)
        (stdout, stderr) = proc.communicate() 
        print stdout,
        # print idlayer, stdout,

main()

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如果有人能帮我的话，我无法正确显示整个Python代码