Basically a docker image that can be hosted in the cloud (or on public facing machine), that allows you to "connect" any device, including your phone, to any other device. Kinda like ngrok but at the application layer. The idea is that you have a library that integrates with your web service running on localhost that defines an API, which then is publically accessible (with authentication) on the cloud container.
The use case would be just being able to interface with your stuff at home without a 3d party solution, in a programmatic way. So you can offload LLM inference, access stuff on your local network, and so on.
Additionally, the docker image should include ways to mesh with other instances, so you can form at hoc networks of devices.