MySQL port is configurable through the .env file

docker-compose.yml

@@ -27,9 +27,9 @@ services:
       # Password for root access
       MYSQL_ROOT_PASSWORD: 'metin2'
     ports:
-      - '3306:3306'
+      - '${MYSQL_PORT}:${MYSQL_PORT}'
     expose:
-      - 3306
+      - ${MYSQL_PORT}
     volumes:
       - ./storage/database/:/var/lib/mysql/
     healthcheck: