diff --git a/docs/images/docker-freecad.md b/docs/images/docker-freecad.md
index 62b77f9fa..f78e3c34b 100755
--- a/docs/images/docker-freecad.md
+++ b/docs/images/docker-freecad.md
@@ -173,6 +173,10 @@ It is possible to install extra packages during container start using [universal
 
 To help you get started creating a container from this image you can either use docker-compose or the docker cli.
 
+!!! info
+
+    Unless a parameter is flaged as 'optional', it is *mandatory* and a value must be provided.
+
 ### docker-compose (recommended, [click here for more info](https://docs.linuxserver.io/general/docker-compose))
 
 ```yaml
@@ -219,8 +223,8 @@ Containers are configured using parameters passed at runtime (such as those abov
 
 | Parameter | Function |
 | :----: | --- |
-| `3000` | FreeCAD desktop gui. |
-| `3001` | FreeCAD desktop gui HTTPS. |
+| `3000:3000` | FreeCAD desktop gui. |
+| `3001:3001` | FreeCAD desktop gui HTTPS. |
 
 ### Environment Variables (`-e`)