通過修改然后commit的方式創建自己的鏡像

創建自己的鏡像：通過現有的鏡像來創建自己的鏡像。

1、首先拉取一個鏡像到本地
$ sudo docker images
REPOSITORY????????? TAG???????????????? IMAGE ID??????????? CREATED???????????? SIZE
ubuntu????????????? 12.04?????????????? 5b117edd0b76??????? 11 months ago?????? 104 MB

2、進入容器
$ sudo docker run -it ubuntu:12.04 bash
$ root@7a61867cf4c5:/#

3、修改容器，這里我們安裝zip包
# apt-get install zip
Reading package lists... Done
Building dependency tree????? ?
Reading state information... Done
E: Unable to locate package zip
需要更新，我們更新
root@7a61867cf4c5:/# apt-get update
結束后
root@7a61867cf4c5:/# apt-get install zip
修改后退出
root@7a61867cf4c5:/# exit
exit

4、保存容器到鏡像
$ sudo docker commit -m 'test' -a 'zhouhai' 7a61867cf4c5 ubuntu:latest
sha256:763d1f40ca6b4a801a78b39ddeb526be44330bb65f4ef94dc9267e4f0985627c
查看鏡像
$ sudo docker images
REPOSITORY????????? TAG???????????????? IMAGE ID??????????? CREATED???????????? SIZE
ubuntu????????????? latest????????????? 763d1f40ca6b??????? 13 seconds ago????? 133 MB
ubuntu????????????? 12.04?????????????? 5b117edd0b76??????? 11 months ago?????? 104 MB

5、導出新產生的鏡像
$ sudo docker save -o /home/zh/ubuntu_zip.tar ubuntu:latest

6、刪除新產生的鏡像
$ sudo docker rmi -f ubuntu:latest
Untagged: ubuntu:latest
Deleted: sha256:763d1f40ca6b4a801a78b39ddeb526be44330bb65f4ef94dc9267e4f0985627c
Deleted: sha256:e6e720db3d4ce9b5b07f4e77e6c0608add2d83b218f2b3107800682e29be246b
查看一下
$ sudo docker images
REPOSITORY????????? TAG???????????????? IMAGE ID??????????? CREATED???????????? SIZE
ubuntu????????????? 12.04?????????????? 5b117edd0b76??????? 11 months ago?????? 104 MB

7、導入剛才保存的鏡像
$ sudo docker load --input /home/zh/ubuntu_zip.tar
83c5e276e2c0: Loading layer [==================================================>] 29.82 MB/29.82 MB
Loaded image: ubuntu:latest
查看一下
$ sudo docker images
REPOSITORY????????? TAG???????????????? IMAGE ID??????????? CREATED???????????? SIZE
ubuntu????????????? latest????????????? 763d1f40ca6b??????? 16 minutes ago????? 133 MB
ubuntu????????????? 12.04?????????????? 5b117edd0b76??????? 11 months ago?????? 104 MB
進入容器
$ sudo docker run -it ubuntu:latest bash
root@9d1ab685dd74:/# zip
Copyright (c) 1990-2008 Info-ZIP - Type 'zip "-L"' for software license.
Zip 3.0 (July 5th 2008). Usage:
zip [-options] [-b path] [-t mmddyyyy] [-n suffixes] [zipfile list] [-xi list]
? The default action is to add or replace zipfile entries from list, which
? can include the special name - to compress standard input.
? If zipfile and list are omitted, zip compresses stdin to stdout.
? -f?? freshen: only changed files? -u?? update: only changed or new files
? -d?? delete entries in zipfile??? -m?? move into zipfile (delete OS files)
? -r?? recurse into directories???? -j?? junk (don't record) directory names
? -0?? store only?????????????????? -l?? convert LF to CR LF (-ll CR LF to LF)
? -1?? compress faster????????????? -9?? compress better
? -q?? quiet operation????????????? -v?? verbose operation/print version info
? -c?? add one-line comments??????? -z?? add zipfile comment
? -@?? read names from stdin??????? -o?? make zipfile as old as latest entry
? -x?? exclude the following names? -i?? include only the following names
? -F?? fix zipfile (-FF try harder) -D?? do not add directory entries
? -A?? adjust self-extracting exe?? -J?? junk zipfile prefix (unzipsfx)
? -T?? test zipfile integrity?????? -X?? eXclude eXtra file attributes
? -y?? store symbolic links as the link instead of the referenced file
? -e?? encrypt????????????????????? -n?? don't compress these suffixes
? -h2? show more help
大功告成！