Note for Dmitri/David: the Virtualbox/Cosmos instructions just document what you guys already went through. This doesn't require a second VM or anything.
- Download Ubuntu 18.04 ISO
- Create new linux 64-bit VM in Virtualbox
- Set memory to 4096 MB
- Do “minimal installation”
- Accept all other defaults
- Increase VM video memory to max
- sudo apt install gcc perl make