📄 docs: Update readme

README.md

@@ -1,6 +1,7 @@
 # NetTrak
 
 NetTrak is a Dockerized network inventory web app that scans a subnet and catalogs:
+
 - Devices discovered on the network
 - Open ports per device
 - Service fingerprint details from `nmap`
@@ -29,17 +30,28 @@ Results are persisted in SQLite for change tracking (new/updated/missing devices
 
 ## Run With Docker Compose
 
+Use the provided `docker-compose.yml` to run the app:
+
 ```bash
-docker compose up --build
+docker compose up -d
 ```
 
 Then open: `http://localhost:1337`
 
 Database file is stored at `./data/nettrak.db` via a bind mount.
 
+## For a fresh build (for example to change the internal port)
+
+```bash
+git clone https://git.keithsolomon.net/keith/NetTrak
+cd NetTrak
+docker compose -f docker-compose-build.yml up --build
+```
+
 ## Configuration
 
 Environment variables:
+
 - `NETTRAK_DB_PATH` (default: `/data/nettrak.db`)
 - `NETTRAK_SUBNET` (default: `192.168.2.0/24`)
 - `NETTRAK_TOP_PORTS` (default: `100`)
@@ -69,6 +81,7 @@ network_mode: host
 NetTrak can optionally annotate host ports that are published by Docker containers on the scan host.
 
 To enable:
+
 - set `NETTRAK_ENABLE_DOCKER_INSIGHTS=1`
 - mount the Docker socket: