[Feature request] copy arkenfox user.js to profile directory

[underocketime]

Idea

I am docker naive. I simply followed the first instruction to get the docker firefox running on my $3 bargain debian12 2c4r vps. Default mozilla is unpleasant. I prefer the "hardening" of arkenfox

https://github.com/arkenfox/user.js

Minimally this can be accomplished copying a user.js into the directory containing prefs.js .

docker cp ... I don't know how to find the filepath for prefs.js so I turn to the community

P.S. would a 4c8r vps perform better for RBI (not-vnc) eventually with ssl and sound relay?

[underocketime]

docker exec -ti firefox sh
cd /config/profile
wget https://github.com/arkenfox/user.js/raw/refs/heads/master/user.js
exit

docker stop firefox
docker start firefox