docs: add docs

README.md

@@ -17,3 +17,28 @@ chromium --user-data-dir="/tmp/chromium" --disable-web-security
 ```
 
 since CORS is not handled in this setup.
+
+### Setup via Nix
+
+Ensure you have [Nix](https://nixos.org/download.html) installed, then run:
+
+```bash
+nix develop
+```
+
+This will set up a development environment with all necessary dependencies.
+
+Then start each component separately:
+
+```bash
+cd ilp-rest-service
+./gradlew bootRun
+
+cd drone-black-box/
+go build
+./drone-black-box
+
+cd drone-frontend/
+bun dev .
+```
+