Add a warning to readme

README.md

@@ -4,6 +4,13 @@
 
 ## Production-like setup
 
+> [!IMPORTANT]
+> The Docker configuration described here is provided *as is* and might require
+> further modifications depending on your system. We are happy to provide
+> guidance if needed, but a good working knowledge of Docker is recommended. If
+> you would like a more traditional setup, see our official installation guide
+> guides [here](https://docs.getindico.io/en/stable/installation/).
+
 ### Quickstart
 
 Before starting the containers, set a `SECRET_KEY` in the [`indico-prod/indico.conf`](indico-prod/indico.conf) file. You can generate one by running the following snippet from the terminal: