You can add your custom domain by navigating to your service's Settings tab, then clicking + Custom Domain under Public Networking and entering tcheswing.com.br (or www.tcheswing.com.br). Railway will provide a CNAME value that you need to add as a CNAME record in your Localweb DNS settings, and once the DNS propagates, Railway will automatically issue an SSL certificate. Full instructions are in our custom domains guide.