Question

我正在尝试学习docker。所以我试图创建一个archlinux映像。目前我不担心大小。但是我对如何继续使用它作为我的项目开发感到困惑。我的目标是分别为我的不同项目创建和使用不同的archlinux映像。

1) shift to root in terminal

2) mkdir archlinux

3) pacstrap -i -c -d ./archlinux base

4) echo 'en_US.UTF-8 UTF-8' > ./archlinux/etc/locale.gen

5) arch-chroot ./archlinux locale-gen

6) echo 'LANG=en_US.UTF-8' > ./archlinux/etc/locale.conf

现在，archlinux文件夹的总大小为899 MB.

现在我正尝试将其作为docker映像导入

cd archlinux

tar -c . | docker import - example_archlinux

tar: ./etc/pacman.d/gnupg/S.gpg-agent: socket ignored
tar: ./etc/pacman.d/gnupg/S.gpg-agent.extra: socket ignored
tar: ./etc/pacman.d/gnupg/S.gpg-agent.ssh: socket ignored
tar: ./etc/pacman.d/gnupg/S.scdaemon: socket ignored
tar: ./etc/pacman.d/gnupg/S.gpg-agent.browser: socket ignored
sha256:2b3ed6536389a1184f402ff5a9d20380a3f4aa2c49bdee31df9c7c10186eb889

现在我运行docker映像

#  docker images          
REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
example_archlinux   latest              2b3ed6536389        About a minute ago   881MB

现在我尝试运行图像：

#  docker run -ti example_archlinux:latest /bin/bash
[root@3863ba31186b /]#

#  docker run -ti example_archlinux:latest ls -al           
total 52
drwxr-xr-x   1 root root 4096 Oct 16 08:32 .
drwxr-xr-x   1 root root 4096 Oct 16 08:32 ..
-rwxr-xr-x   1 root root    0 Oct 16 08:32 .dockerenv
lrwxrwxrwx   1 root root    7 Jan  5  2018 bin -> usr/bin
drwxr-xr-x   2 root root 4096 Oct 16 08:01 boot
drwxr-xr-x   5 root root  360 Oct 16 08:32 dev
drwxr-xr-x   1 root root 4096 Oct 16 08:32 etc
drwxr-xr-x   2 root root 4096 Jan  5  2018 home
lrwxrwxrwx   1 root root    7 Jan  5  2018 lib -> usr/lib
lrwxrwxrwx   1 root root    7 Jan  5  2018 lib64 -> usr/lib
drwxr-xr-x   2 root root 4096 Jan  5  2018 mnt
drwxr-xr-x   2 root root 4096 Jan  5  2018 opt
dr-xr-xr-x 275 root root    0 Oct 16 08:32 proc
drwxr-x---   3 root root 4096 Oct 16 08:01 root
drwxr-xr-x   2 root root 4096 Oct 16 08:01 run
lrwxrwxrwx   1 root root    7 Jan  5  2018 sbin -> usr/bin
drwxr-xr-x   4 root root 4096 Oct 16 08:01 srv
dr-xr-xr-x  13 root root    0 Oct 16 08:32 sys
drwxrwxrwt   2 root root 4096 Oct 16 08:01 tmp
drwxr-xr-x   8 root root 4096 Oct 16 08:10 usr
drwxr-xr-x  12 root root 4096 Oct 16 08:01 var

太好了。它的工作

Q1 : Will docker not ask for login and password of root, assuming i have set root passwd

我想创建我的Django + ngingx + postgresql + redis + git。我将安装并设置所需的软件包。。所以我正在测试run命令是否会保存craeted文件夹

#  docker run -ti example_archlinux:latest /bin/bash
[root@9f4e56ce38c5 /]# mkdir hare      
[root@9f4e56ce38c5 /]# exit

#  docker run -ti example_archlinux:latest ls /hare
ls: cannot access '/hare': No such file or directory

我有一个主要问题：

Q2 Since i created a folder and if i exit its not there anymore. 

Now what is the best way to use a docker image for my development. 

I cant afford that my files are not there after i exit.

So is there any way that the container is permanently created and i can work in it for my development.

OR

在主机或Docker上创建我的源代码的位置。我希望所有东西都集中在一个地方。

Answer 1

问题1：我从未尝试设置root密码。但是通常，运行容器时，除非使用USER Dockerfile命令，否则您将以root用户身份登录，这是更安全的方法。进一步了解here

第二季度：：每次移除容器时，其中的所有物品都会被销毁。因此，除非将卷绑定到主机，否则您将丢失已创建的文件。卷是标准的处理方式。例如，您可以在docker run命令中定义一个卷：

docker run -ti -v /host/source/folder:/desired/guest/folder example_archlinux:latest ls -al

现在，您可以从容器或主机添加/删除/更改文件，它将被保留。不会有重复的文件。只是两个人都可以访问它。

更多详细信息here

为archlinux创建自己的docker映像以及如何将其用于开发

1 个答案: