Requirements:
- Node 6
- A build environment, on ubuntu the build-essentials package should be enough
- Steamworks SDK v1.37 (Steam login needed) https://partner.steamgames.com/downloads/list
- Clone of the greenworks repo's master branch https://github.com/greenheartgames/greenworks
- A copy of the screeps server
From here on, the following folder structure is assumed for simplicity:
- steamworks_sdk
- greenworks