diff --git a/README.md b/README.md
index 2dd7ae8..f9961bb 100644
--- a/README.md
+++ b/README.md
@@ -75,7 +75,7 @@ If you need more then you can use collections to condense the list into a single
    * _[!288520](https://store.steampowered.com/app/288520) Arma 3 Karts (DLC)_
 
 ## Self hosting
-NodeJS or PHP runtime is required to relay backend calls to the steam API. _(CORS disabled 😔)_  
+NodeJS, PHP, Python or Docker is required to relay backend calls to the steam API. _(CORS disabled 😔)_  
 Spin up an instance on `http://localhost/` with one of these commands:
  * nodejs: `node server.js`
  * python: `python server.py`
@@ -85,6 +85,7 @@ Spin up an instance on `http://localhost/` with one of these commands:
 _The app can be served from under any subdomain or path._
 
 ### Environmental variables
+`PORT` controls the listener port of NodeJS and Python servers. _[default: 80]_  
 `CACHE_MAX_AGE` controls the browser cache for backend requests in seconds. _[default: 0]_  
 `STEAM_WEB_API_KEY` enables the usage of [API key](https://steamcommunity.com/dev/apikey) protected steam endpoints. (optional but recommended ⚠) _[default: empty]_  
  ⤷ _the public API fails on some workshop IDs where the key protected one returns details just fine 🤷‍♂️_