Startup Issue with Minecraft - Forge keeps trying to update

System Information

Field Value
Operating System Linux - Debian GNU/Linux 12 on x86_64
Product AMP ‘Phobos’ v2.6.3.2 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Failed

Problem Description

Issue

Tried running server that works on PrismLauncher, but refuses to start on AMP.

Reproduction Steps

  • Installed forge installer
  • Copied all mods/resourcepacks, shaderpacks, configs from PrismLauncher instance
  • Changed settings from user_args.txt into the AMP panel
  • Clicked start
  • Get screen that says ForgeUpdateManager cannot be found.