Issue Deploying Laravel PHP

Hello, i'm trying to deploy an already existing project made in PHP, using Laravel, and i'm trying to change the homologation environment to Railway. I need to make the Dockerfile (this projects was a terror to set the container) and tried to do the deploy, set up the database, runned the migrations and seeder, all's good. But the problem starts when i tried to access the public URL, i'm recieving an 503 HTTP code, the command is "php artisan serve", and this is the output log: INFO Server running on [http://127.0.0.1:8000]. Press Ctrl+C to stop the server