Add network (#6)

Add network

Reviewed-on: #6
Co-authored-by: ryuupendragon <ryuu@ryuu.in>
Co-committed-by: ryuupendragon <ryuu@ryuu.in>

uptime-kuma/docker-compose.yml

@@ -5,5 +5,11 @@ services:
     volumes:
       - ${APPDATA_PATH}/uptime-kuma/config:/app/data
     ports:
-      - "${PORT}:3001"
+      - ${PORT}:3001
+    networks:
+      - frontend
     restart: unless-stopped
+
+networks:
+  frontend:
+    external: true