Cusdis is a lightweight and privacy-first comment system that can be self-hosted without tracking users. Railway provides a free one-click deploy for Cusdis using PostgreSQL, automagically provisioning the database and running required migrations. To deploy, click the button, enter environment variables such as username, password, and JWT secret, and hit deploy. The default port is 3000, but this can be changed if needed. Once deployed, a dashboard can be accessed to create projects and add commenting functionality to websites.