docs: Refer to environment documentation (#1236)

readme.md

@@ -261,6 +261,10 @@ kubectl apply -f https://raw.githubusercontent.com/vdsm/virtual-dsm/refs/heads/m
 
   Replace the example path `./DSM_VirtualDSM_42218.pat` with the filename of your desired `.pat` file. The value of `URL` will be ignored in this case.
 
+### Are these all available options?
+
+No. For a complete overview of all supported settings, see the [environment variables](docs/environment.md) page.
+
 ### What are the differences compared to the standard DSM?
 
   There are only two minor differences: the Virtual Machine Manager package is not available, and Surveillance Station will not include any free licenses.