Add WASP Node Requirements (#1525)

* added Recommended Hardware Requirements

* remove unnecessary info
add it where it was necessary

docs/maintain/wasp/v1.0.0-rc.6/docs/how-tos/running-a-node.md

@@ -17,6 +17,14 @@ tags:
 
 As Wasp is an INX plugin, you must run the wasp node alongside your _hornet node_. You can use the simple docker-compose setup to do so.
 
+## Recommended Hardware Requirements
+
+We recommend that you run the docker image on a server with:
+
+* **CPU**: 8 core.
+* **RAM**: 16 GB.
+* **Disk space**: ~ 250 GB SSD, depending on your pruning configuration. 
+
 ## Set Up
 
 Clone and follow the instructions on the [node-docker-setup repo](https://github.com/iotaledger/node-docker-setup).