feat: Add local Docker test environment setup with PowerShell script and Docker Compose.

docker-compose.test.yml

@@ -0,0 +1,11 @@
+services:
+  iptv-web:
+    build: .
+    ports:
+      - "8089:8089"
+    volumes:
+      - xtremflow-data:/app/data
+    restart: unless-stopped
+
+volumes:
+  xtremflow-data: