update deploy docs

.build/prod/README.md

@@ -11,25 +11,21 @@ host.com/        -> frontend (nginx static SPA)
 host.com/api/... -> backend  (FastAPI, /api prefix stripped)
 ```
 
-### Build & run
+### Build
 
 ```sh
-cp .env.example .env                                 # VITE_API_TARGET (dev proxy only)
-cp ../../backend/.env.example ../../backend/.env     # DB creds, API_KEY, etc.
+echo $VITE_API_TARGET=http://192.168.1.21:8000 > .build/prod/.env
 docker compose -f .build/prod/compose.yml up -d --build
 ```
-
-The portal is then available on `http://HOST:8000`.
-
 ### Running from published images
-
+- compose.yml
 ```yml
 services:
    backend:
       hostname: backend
       image: git.shihaam.dev/sarlink/radadmin/backend
       env_file:
-        - backend.env
+        - .env
    frontend:
       hostname: frontend
       image: git.shihaam.dev/sarlink/radadmin/frontend
@@ -38,3 +34,16 @@ services:
       depends_on:
        - backend
 ```
+- Create `compose.yml` with the above yaml
+- Create .env and fill 
+```
+# --- Database (FreeRADIUS) ---
+DB_HOST=raddb
+DB_PORT=3306
+DB_USER=radadmin
+DB_PASSWORD=changeme
+DB_NAME=radius
+
+# --- API ---
+API_KEY=changeme
+```