[gravypod]

Something I'd be very interested in: building a PXE image from something declarative like Dockerfiles.

[justincormack]

Try LinuxKit https://github.com/linuxkit/linuxkit

[laurencerowe]

Google Container Optimized OS is basically this I think. It's what's used when you start a GCE instance with a docker image.

https://cloud.google.com/container-optimized-os/

[jonjonsonjr]

I don't think I'd ever call a Dockerfile declarative.