use tsx in dev instead of ts-node

Author: Veikkosuhonen

README.md

@@ -8,3 +8,14 @@ UI and access management wrapper for Azure OpenAI service.
 - Clone the repository
 - Copy `.env.template` as `.env` file and fill in the required values
 - Run `npm i` and `npm start` to setup and start the development environment
+
+### Troubleshooting
+
+Getting `Error: Cannot find module @rollup/rollup-linux-arm64-musl` on MacOS? 
+This is likely because you ran `npm i` locally.
+Try removing package-lock.json locally and running
+```
+docker compose build
+```
+
+If then you're getting `concurrently not found`, prepend the `npm run dev` script with `npm i` and run once with that.