docs: add small note on dependency maangement (#62)

Author: cyclimse

README.md

@@ -94,6 +94,12 @@ To deploy your function please refer to our official documentation.
 
 No, this framework does not affect deployment or performance.
 
+**How can I use my packaged dependencies?**
+
+When deploying Python functions, your dependencies must be bundled in a `package` folder at the root of your project. For local testing, you can set `PYTHONPATH=$(pwd)/package` to make your dependencies available. This can be useful to avoid packaging your dependencies in multiple locations.
+
+Please note that this does not work for native dependencies as the Scaleway Python runtime is different from your local machine.
+
 **Why are my logs not showing up when using the print function?**
 
 By default, stdout is buffered in Python, so calling `print` without `flush=True` can lead to missing logs when running locally.