fix(docker): fixes to allow an external url more easy

when running in docker we might be using a different url thats not predefined in the cors so we want
to allow 1 more

backend/utils/cors.utils.ts

@@ -15,7 +15,7 @@ export const allowedOrigins = [
 	`http://${process.env.PROD_SERVER}:3000`,
 	`http://${process.env.PROD_SERVER}:3100`, // temp
 	`http://usmcd1olp082:3000`,
-	`http://localhost:3600`, // internal docker
+	`${process.env.EXTERNAL_URL}`, // internal docker
 ];
 export const lstCors = () => {
 	return cors({