Update readme

README.md

@@ -22,9 +22,13 @@ sudo sh get-docker.sh
 
 `pnpm install`
 
-3. **Run dev script**
+3. **Run dev container**
 
-`pnpm dev`
+`pnpm dev` or `docker compose up`
+
+### Notes
+- payload-types.ts file will be generated when starting the dev container, but can also be generated manually with `pnpm generate:types`
+- Dev container will use `node_modules`, so make sure to run `pmpm install` prior to `pnpm dev`
 
 ### Technical details
 Nextload is a fork of [payload 3 demo](https://github.com/payloadcms/payload-3.0-demo)