How do I run NPM as non-root?

[UntouchedWagons]

Hello there,

I run all my docker containers as non-root, specifically as my user, partially so that if need be I can easily fix configs and to make backups easier. I want to possibly replace SWAG with NPM because dealing with nginx config files is a pain in the caboose but I can't find any info on running NPM as non root.

I've tried PUID and PGID environment variables but I think that's more of a LSIO thing, I also tried user: "1000:1000" which I use with my Vaultwarden container but this didn't work either I'd get the message s6-mkdir: warning: unable to mkdir /var/run/s6: Permission denied. I suppose this later method is working but I suspect /var/run/s6 is owned by root.

Can I get NPM to run entirely as non-root or will I have to resort to docker volumes?