get port from env

bbpay.py

@@ -167,7 +167,7 @@ api.add_resource(Release, '/release/<int:numeroSolicitacao>')
 if __name__ == '__main__':
     if getenv("DEBUG"):
         disable_warnings()
-        app.run(host='::1',debug=True)
+        app.run(host='::1', debug=True, port=getenv("PORT",5000))
     else:
         from waitress import serve
         serve(app, host=getenv("HOST","::1"), port=getenv("PORT",5000))