Hey HN! We're releasing Uffizzi open source.<p>Uffizzi is a tool that lets you preview pull requests before merging. Create on-demand Preview Environments for APIs, frontends, backends, databases, and microservices. Each Preview Environment gets a secure HTTPS URL that is continually refreshed when you push new commits. Uffizzi also handles clean up, so your environments last only as long as you need them.<p>Uffizzi is an open-source, off-the-shelf, cross-platform solution that works with any version control system, container registry, or CI platform.