You can deploy a containerized application on Render using Node.js, PostgreSQL, and a proxy server. To start, create a new PostgreSQL instance in the Render dashboard with the name "fusionauth-example" and set it to the free tier for now. Then, set up FusionAuth as a web service by creating a new web service in the Render dashboard, specifying the image `docker.io/fusionauth/fusionauth-app:latest`, and choosing Ohio (US East) as the region. Configure environment variables such as `DATABASE_URL`, `DATABASE_USERNAME`, and `DATABASE_PASSWORD` to connect to the PostgreSQL database. Deploy the web service and wait for it to start. Once started, enter maintenance mode by opening the provided URL in a browser and submitting the setup screen. Create an admin user in FusionAuth and access the admin dashboard. To resolve configuration issues related to origins and CORS, set up a proxy using a simple Node.js application with Express.js. Deploy this application to Render under a new web service named "FusionAuth Render Proxy" and add the environment variable `RENDER_FUSIONAUTH_INTERNAL_URL` to configure the proxy. Finally, complete the setup by going back to the FusionAuth dashboard and accessing the proxy URL. This setup is great for development and hobby projects, but consider scaling up instances and monitoring performance for production use.