用supermin制作centos 7 docker 基础镜像

supermin5 一个工具，运行命令man supermin可以查看关于这个工具的基本信息。

1. NAME
2. supermin - Tool for creating supermin appliances
4. SYNOPSIS
5. supermin [-o OUTPUTDIR] --names LIST OF PKGS ...
6. supermin [-o OUTPUTDIR] PKG FILE NAMES ...
8. DESCRIPTION
9. Supermin is a tool for building supermin appliances. These are tiny appliances (similar to virtual machines), usually
10. around 100KB in size, which get fully instantiated on-the-fly in a fraction of a second when you need to boot one of
11. them.
13. Originally "fe" in "febootstrap" stood for "Fedora", but this tool is now distro-independent and can build supermin
14. appliances for several popular Linux distros, and adding support for others is reasonably easy. For this reason,
15. starting with version 4, we have renamed the tool "supermin".
17. Note that this manual page documents supermin 4.x which is a complete rewrite and quite different from febootstrap 2.x.
18. If you are looking for the febootstrap 2.x tools, then this is not the right place.

运行命令supermin5 --help可以查看基本的使用方法

1. [root@centos7 ~]# supermin5 --help
2. supermin - tool for creating supermin appliances
3. Copyright (C) 2009-2014 Red Hat Inc.
5. Usage:
7. supermin --prepare LIST OF PACKAGES ...
8. supermin --build INPUT [INPUT ...]
10. For full instructions, read the supermin(1) man page.
12. Options:
14. --build Build a full appliance
15. --copy-kernel Copy kernel instead of symlinking
16. --dtb WILDCARD Find device tree matching wildcard
17. -f chroot|ext2 Set output format
18. --format -"-
19. --host-cpu ARCH Set host CPU architecture
20. --if-newer Only build if needed
21. --include-packagelist Add a file with the list of packages
22. --list-drivers Display list of drivers and exit
23. --lock LOCKFILE Use a lock file
24. --names Give an error for people needing supermin 4
25. -o OUTPUTDIR Set output directory
26. --packager-config CONFIGFILE Set packager config file
27. --prepare Prepare a supermin appliance
28. --size Set the size of the ext2 filesystem
29. --use-installed Use installed files instead of accessing network
30. -v Enable debugging messages
31. --verbose -"-
32. -V Display version and exit
33. --version -"-
34. -help Display this list of options
35. --help Display this list of options

如果找不到该命令，用 yum install supermin* 安装。

步骤-1

supermin5 -v --prepare bash coreutils -o supermin.d

步骤-2

supermin5 -v --build --format chroot supermin.d -o appliance.d

步骤-3

1. echo 7.2 > appliance.d/etc/yum/vars/releasever
2. tar --numeric-owner -cpf centos-7-2.tar -C appliance.d .

步骤-4导入tar文件到docker

 cat centos-7-2.tar | docker import - oliver/centos:v7.2

制作镜像时想包含某个命令，但又不知道在哪个包时，可以用yum whatprovides 来查找。

1. [root@centos7 images]# yum whatprovides */ifconfig
2. 已加载插件：fastestmirror
3. Loading mirror speeds from cached hostfile
4. * base: centos.ustc.edu.cn
5. * extras: mirrors.cn99.com
6. * updates: mirrors.cn99.com
7. net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
8. 源 ：base
9. 匹配来源：
10. 文件名 ：/sbin/ifconfig
14. net-tools-2.0-0.17.20131004git.el7.x86_64 : Basic networking tools
15. 源 ：installed
16. 匹配来源：
17. 文件名 ：/sbin/ifconfig

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文章标签： docker基础镜像supermin5docker

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