UnRAID Install - db folder missing

[0rn0lf]

The following error appears during the setup assistant

 The FOLDER containing the DB file is not writable, and it has to.
 Please give write permissions on folder '/var/www/baikal/Specific/db' 

Pretty similar to #62 but it seems, that the error occurs because the db folder is missing.
I executed the following command in the container to create the folder and was able to finish the setup assistant:

mkdir /var/www/baikal/Specific/db

The folder is now owned by root. Does it have to be changed to nginx?

# ls -la /var/www/baikal/Specific
total 4
drwxrwxrwx 1 nginx nginx 57 Apr  8 12:13 .
drwxr-xr-x 1 nginx nginx 88 Apr  6 23:37 ..
-rw-r--r-- 1 nginx nginx 31 Apr  8 09:28 .htaccess
-rw-r--r-- 1 nginx nginx  0 Apr  8 12:13 INSTALL_DISABLED
drwxr-xr-x 1 root  root  23 Apr  8 12:13 db

Database is owned by nginx

# ls -la /var/www/baikal/Specific/db 
total 108
drwxr-xr-x 1 root  root      23 Apr  8 12:13 .
drwxrwxrwx 1 nginx nginx     57 Apr  8 12:13 ..
-rw-r--r-- 1 nginx nginx 110592 Apr  8 12:13 db.sqlite

[Joshndroid]

I stumbled back here and see this issue.
Is it possible the container needs to have a user specified as in a UID/GID?