Skip chown - Universal Docker mod

This mod skip the long chown of all ressources inside the /config folder at boot.

In any docker arguments, set an environment variable DOCKER_MODS=xefir/mods:skip-chown

If adding multiple mods, enter them in an array separated by |, such as DOCKER_MODS=xefir/mods:skip-chown|linuxserver/mods:server-mod2