It would be awsome if somebody explained to me how to use github repos as custom server for skins in pre v2
i tried everything i could possibly do..

(altough i would be even better if a v2 port relased to 1.12.2) but still, i want to know how to use the .cfg file to allow my github repo to be loaded

Just tried the same repo using CustomServer2 on 1.16.5 on the v2 of the mod for the same version
the repo seems to work fine, idk why it isn't loading on CustomServer1 on 1.12.2..

Here's my CFG file from 1.12.2

Configuration file

client {
# /skins/(uuid|username) and /capes/(uuid|username) will be queried for respective resources [default: http://example.com]
S:hostCustomServer=http://raw.githubusercontent.com/heyitzcarlos/gordonverse_capes/master/

#  [default: true]
B:useCrafatar=false

#  [default: false]
B:useCustomServer=true

#  [default: true]
B:useMojang=false

}

Has anybody find out how to make it load?

Documentation on how to make it work

just upload the file without a png extension, idk why but it works..

Sorry about the late reply.
Yes, you need to remove the file extension if you use custom server method.