Update README.md (#280)

Author: vorburger

README.md

@@ -70,9 +70,7 @@ You can obviously mix the order and repeat titles, comments, chats, narrations,
 
     ./gradlew build
 
-### Locally in a container
-
-#### Dockerfile
+### Locally in a container (Dockerfile)
 
     docker build -t minecraft-storeys-maker .
 
@@ -89,6 +87,18 @@ If you want to run on a diffenent host then localhost, you'll need to set the fo
     storeys_eventBusURL = http://<EXTERNAL-IP>:8080/
 
 
+### GCP
+
+A _Series N1: f1-micro (1 vCPU, 614 MB memory)_ is too small and crash loops; but
+a _Series N1: g1-small (1 vCPU, 1.7 GB memory)_ seems to suffice for 1 or 2 player; otherwise
+a _N1 standard_ or
+a _e2-medium (2 vCPU, 4 GB memory)_ or more is recommended.
+
+Remember to set the environment variables as above, add a persistent `/data` volume, and create an appropriate firewall rule.
+
+_TODO Cost: $x VM + $y PD + $7 (?) static IP + $z Ingress+Egress = $TBD._
+
+
 ## FAQ
 
 **Seriously, "storeys" (not _"stories"_) Maker, are you mental?** Yeah.. just to avoid any possible confusion with Minecraft Story Mode! ;-)