[Bug Report] Inconsistent file permissions in the "generated" directory

[stashTX]

Describe the bug
When running under docker, I'm having trouble understanding the file ownership that everything is created under. It seems that some files are created as my user and some are created as root. I haven't been able to discern a pattern or reasoning for this.

eg:

stashman@server1:/mnt/data/stashapp/generated$ find . -group root |wc -l
194
stashman@server1:/mnt/data/stashapp/generated$ find . -group stashman |wc -l
14433

As you can see the vast majority of files are created as the user running the docker container, but a small smattering of files are created as root. If I go reset the ownership on all the files everything works fine, but the next time I go add something some files will again be created as my user and some as root.

To Reproduce
Steps to reproduce the behavior:

1. Run stashapp as docker container using official image.
2. Observe ownership of various files in the "generated" directory.

Expected behavior
All files should be owned by the same user. Ideally one could set an environment variable in the docker-compose with uid/gid and stashapp would use this, but I would settle for just consistency. :)

Stash Version: (from Settings -> About):
v0.16.0