## 1. Nginx Configuration

- [x] 1.1 Create `nginx.conf` with a server block that serves `/recordings` with `autoindex on` and correct MIME type for MP3 files

## 2. Docker Integration

- [x] 2.1 Add an `nginx` service to `docker-compose.yml` using `nginx:alpine`, mounting `/home/m/recordings` to `/recordings:ro` and `./nginx.conf` to the Nginx config path, exposing port 8080

## 3. Deploy and Verify

- [x] 3.1 Deploy to the Pi and verify directory browsing and MP3 playback work at `http://sdr-pi:8080`