Places to host Java WAR projects for a portfolio? Cheap or Free

Does anybody know of any sites that let you host java .war project files for free or cheap?

I want to host some applications for a portfolio, so I'm not looking for the most robust service. I'm aware of the free credit with AWS and GCS, but looking for something more long-term.

Alternatively, any ideas on showcasing projects for a portfolio?

Thanks

You can try

• https://www.back4app.com/
• https://render.com/

This offers java deployment as docker samle dockerFile https://github.com/rksharma1401/apache-camel-microservice/blob/main/Dockerfile