discord-with-proxy

gistfile1.sh

#!/bin/sh
/Applications/Discord.app/Contents/MacOS/Discord --proxy-server=http://po.cc.ibaraki-ct.ac.jp:3128

works fine with

{
  "chromiumSwitches": {},
  "IS_MAXIMIZED": false,
  "IS_MINIMIZED": false,
  "WINDOW_BOUNDS": {
    "x": 128,
    "y": 59,
    "width": 1280,
    "height": 720
  },
  "SKIP_HOST_UPDATE": true
}

But fails with SKIP_MODULE_UPDATE

is there a version for linux

On linux you can run apps in a namespace and have that network only access the internet via whatever you like.
For future reference with apps that do not respect proxying

worked for me (macOS, zsh)

env https_proxy="http://127.0.0.1:8086" /Applications/Discord.app/Contents/MacOS/Discord

Here's the best way to do it on macOS!

The simple way is by using a terminal and running:

HTTPS_PROXY="http://proxy_address" 
/Applications/Discord.app/Contents/MacOS/Discord --proxy-server="http://proxy_address"

The first line sets the environment, which is crucial for the updater to work natively — and the second line just launches Discord with the native proxy parameter.

But there's a better way!
Now, to make it even better, you can have it run without relying on a terminal either. Just launch Automator, create a new file of type "application", and add a "run shell script" action. There, add the following:

export HTTPS_PROXY="http://proxy_address" 
nohup /Applications/Discord.app/Contents/MacOS/Discord --proxy-server="http://proxy_address" > /dev/null 2>&1 &

This will run it without actually spawning a terminal window. Now, just save the workflow. By default it'll be in ~/Library/Services — you can just drag it to your dock, and run it easily at any time.