I have a docker container with some processes (uwsgi and celery) running inside. I want to create a celery user and a uwsgi user for these processes as well as a worker group that they will both belong to, in order to assign permissions.
I tried adding RUN adduser uwsgi and RUN adduser celery to my Dockerfile, but this is causing problems, since these commands prompt for input (I've posted the responses from the build below).
What is the best way to add users to a Docker container so as to set permissions for workers running in the container?
My Docker image is built from the official Ubuntu14.04 base.
Here is the output from the Dockerfile when the adduser commands are run:
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]
I'd recommend using the full name options in a Dockerfile, like in a script, instead of the short ones (more to be used when used interactively IMO).
useradd --create-home --shell /bin/bashis more understandable/readable for coworkers.In order to set password you could use chpasswd like:
RUN echo 'newuser:newpassword' | chpasswdNote that if you're creating a new user with a large user ID, docker may hang/crash as it tries to create lastlog - a massive sparse file. Avoid this with the
--no-log-initoption touseradd.Nice tip, @iuridiniz! Don't forget to call it before
USER newuser. If you also need the user to have root privileges, you can also includeadduser <username> sudo./bin/sh: useradd: not foundalpine linux