That said, I'm surprised that Azure and GCP don't already have similar service offerings... I'm not sure about nixpacks over direct Dockerfile usage though. Would also be nice to see a WebASM package system as well for single ip/socket services and web-service request handlers. Simplify the application layer as much as possible and make logging via line-separated json on stdout the norm... add layers to relay logging and handle TLS termination. IT just makes sense... it also makes sense to bundle services onto fewer servers based on actual ram/cpu usage. Maybe an easy button for redundancy, and that's it.
There's a lot of appeal in what fly, deno, cloudflare and others are offering but to a broader range of options than just JS focus with WebASM as a minor afterthought with weird limitations in practice.