Update 'docker-compose.yml'

Updated ports and ELGG_WWW_ROOT

docker-compose.yml

@@ -1,7 +1,7 @@
 web:
   build: .
   ports:
-    - "8080:80"
+    - "18089:80"
   links:
     - mysql
   volumes:
@@ -11,7 +11,7 @@ web:
     MYSQL_PASS: root-pass
     ELGG_USERNAME: admin
     ELGG_PASSWORD: admin-pass
-    ELGG_WWW_ROOT: http://localhost:8080
+    ELGG_WWW_ROOT: http://localhost:18089
 mysql:
   image: mysql:5.6  
   environment: