Docker: Improve entrypoint script

[ToXinE]

As i've saw in issue #263 I think there is a bug in setting the correct GID of photoprism with docker compose.

here is my docker-compose.yml

I've set UID to 1000 (mediacenter) and gid to 1000 (mediacenter) in docker compose but it creates the directory photoprism with 1000:0 and the other with another user.

here is the problem :

Latest photoprism docker image running on Ubuntu 20.04 LTS

How can i make the docker image to use my user "mediacenter" and the group "mediacenter" ?

[lastzero]

Did you try starting PhotoPrism with user: "1000:1000" in your docker-compose.yml?

The env variables are for NAS devices who don't support setting a user / group natively. Of course we're also welcome improvements for the related entrypoint.sh script. 👍

[ToXinE]

Yes I tried but it seems no to do anything.
I don't care running as photoprism:photoprism inside the container, I only need to map the user used inside the container to mediacenter:mediacenter outside of the container. I thought the parameters UID, GID and UMASK was made for that purpose. Am I right or did I miss something ?

[lastzero]

It's made for this, but i can't confirm any issues just like I don't have issues with the native user parameter. Might be something else if both don't work for you?

[stumpylog]

I belive I'm running into this as well. When starting the docker container, I see the following in the logs:

groupadd: '971' is not a valid group name
usermod: group '971' does not exist

As with the above example, I am setting a UID and GID through environment variables. It appears the group isn't being created?

[lastzero]

Can you check our entrypoint script and suggest how we can improve this for you so that it works?

[ToXinE]

I'd like to but I'm not expert enough in docker / containers to know what's wrong with GID not being applied.
I've set GID to my mediacenter group Id but it doesn't care and run photoprim with root group (0) instead of mediacenter group (1000) as specified in the GID environnement variable.

      # Set a non-root user, group, or custom umask if your Docker environment doesn't support this natively:
      UID: 1000
      GID: 1000
      UMASK: 002

[lastzero]

Might have to simply create that group in the container...

[lastzero]

Our use the native Docker way to set user and group