Update README.md

Author: hatamiarash7

README.md

@@ -6,9 +6,10 @@ Mikrotik Dashboard specially for Hotspot and manage router, a Dockerized version
 
 ## Instalation
 
-`docker-compose up --build`
-
-Open `http://localhost:<published_port>` and login with **admin:admin**
+1. **Optional** : Create `.env` and set `APP_PORT`
+2. `docker-compose up --build`
+3. Open `http://localhost:<APP_PORT>`
+4. Login with **admin:admin**
 
 ## Changelog