I have a 32 GB SD card it's running on it no problem. It currently takes like 4 GB (it can store previous docker images for speeding up builds and allowing auto rollback).
Stories like these just go to show me how much fat there is in Tech. The sector is in for a sharp reality check. You don't need 10s of gigs of RAM and 20 cores to host your blog or small business e-commerce site. But if you use the latest bullshit framework then maybe you do...