Updated Readme

README.md

 Quassel-Webserver Docker Image
 ==============================
 
-For configuration, you can mount a file at `/quassel-webserver/settings.user.js`, with this content
-(plus whatever changes you wish to make):
+Run the container with: `docker run k8r.eu/justjanne/quassel-webserver -p 64080:64080`
+
+For configuration, you can mount a file at `/quassel-webserver/settings.user.js`:
 
 ```js
 module.exports = {