Warm tip: This article is reproduced from serverfault.com, please click

linux-如何将用户添加到 Docker 容器?

(linux - How to add users to Docker container?)

发布于 2014-12-30 08:26:07

我有一个 docker 容器,里面运行着一些进程(uwsgi 和 celery)。我想为这些进程创建一个 celery 用户和一个 uwsgi 用户,以及一个他们都属于的工作组,以便分配权限。

我尝试将RUN adduser uwsgi添加RUN adduser celery到我的 Dockerfile,但这会导致问题,因为这些命令提示输入(我已经发布了下面构建的响应)。

将用户添加到 Docker 容器以便为在容器中运行的工作人员设置权限的最佳方法是什么?

我的 Docker 镜像是从官方的 Ubuntu14.04 基础构建的。

以下是运行 adduser 命令时 Dockerfile 的输出:

Adding user `uwsgi' ...
Adding new group `uwsgi' (1000) ... 
Adding new user `uwsgi' (1000) with group `uwsgi' ... 
Creating home directory `/home/uwsgi' ...
Copying files from `/etc/skel' ... 
[91mEnter new UNIX password: Retype new UNIX password: [0m 
[91mpasswd: Authentication token manipulation error
passwd: password unchanged
[0m 
[91mUse of uninitialized value $answer in chop at /usr/sbin/adduser line 563.
[0m 
[91mUse of uninitialized value $answer in pattern match (m//) at /usr/sbin/adduser line 564.
[0m 
Try again? [y/N] 
Changing the user information for uwsgi
Enter the new value, or press ENTER for the default
    Full Name []: 
Room Number []:     Work Phone []:  Home Phone []:  Other []: 
[91mUse of uninitialized value $answer in chop at /usr/sbin/adduser line 589.
[0m 
[91mUse of uninitialized value $answer in pattern match (m//) at /usr/sbin/adduser line 590.
[0m 
Is the information correct? [Y/n] 
---> 258f2f2f13df 
Removing intermediate container 59948863162a 
Step 5 : RUN adduser celery 
---> Running in be06f1e20f64 
Adding user `celery' ...
Adding new group `celery' (1001) ... 
Adding new user `celery' (1001) with group `celery' ... 
Creating home directory `/home/celery' ...
Copying files from `/etc/skel' ... 
[91mEnter new UNIX password: Retype new UNIX password: [0m 
[91mpasswd: Authentication token manipulation error
passwd: password unchanged
[0m 
[91mUse of uninitialized value $answer in chop at /usr/sbin/adduser line 563.
[0m 
[91mUse of uninitialized value $answer in pattern match (m//) at /usr/sbin/adduser line 564.
[0m 
Try again? [y/N] 
Changing the user information for celery
Enter the new value, or press ENTER for the default
    Full Name []:   Room Number []:     Work Phone []: 
Home Phone []:  Other []: 
[91mUse of uninitialized value $answer in chop at /usr/sbin/adduser line 589.
[0m 
[91mUse of uninitialized value $answer in pattern match (m//) at /usr/sbin/adduser line 590.
[0m 
Is the information correct? [Y/n] 
Questioner
rfj001
Viewed
0
330 2015-07-23 12:29:48

诀窍是使用useradd而不是它的交互式包装器adduser我通常使用以下方法创建用户:

RUN useradd -ms /bin/bash newuser

它为用户创建一个主目录,并确保 bash 是默认 shell。

然后你可以添加:

USER newuser
WORKDIR /home/newuser

到你的 dockerfile。之后的每个命令以及交互式会话都将以用户身份执行newuser

docker run -t -i image
newuser@131b7ad86360:~$

newuser在调用用户命令之前,你可能必须授予执行你打算运行的程序的权限。

出于安全原因,在容器内使用非特权用户是一个好主意。它也有一些缺点。最重要的是,从你的镜像中获取镜像的人必须先切换回 root 身份,然后才能以超级用户权限执行命令。