Update Setup.md for sandboxed users (#116)

docs/Setup.md

@@ -59,6 +59,8 @@ The next step is to specify which model will be used by the integration. You may
 
 Pressing `Submit` will download the model from HuggingFace.
 
+**Note for Docker/sanboxed HA install users:** The model download may fail if it does not have the permissions to create the ```media``` folder in your Home Assistant install. To fix this, you will need to manually create the folder beside your existing ```config``` folder called ```media``` and set the permissions accordingly so that the addon can access it. If you're using Docker or similar, you may need to map the folder in your Compose file too and ```Update the Stack```. Once created and updated, you can open the model download screen again and it should now download as normal.
+
 ### Step 3: Model Configuration
 This step allows you to configure how the model is "prompted". See [here](./Model%20Prompting.md) for more information on how that works.
 
@@ -129,4 +131,4 @@ In order for any entities be available to the agent, you must "expose" them firs
 
 ## Finished!
 Return to the "Overview" dashboard and select chat icon in the top left.  
-From here you can chat with the AI model and request it to control your house.
+From here you can chat with the AI model and request it to control your house.