I was going to say it'd be even more interesting if it were OCI-compliant, but I forgot Oracle already wrote an OCI-compliant container runtime in Rust: https://github.com/oracle/railcar
Though I've never really heard of folks using OCI runtimes other than `runc` and kata/clearcontainers. (edit: I guess Chromium uses `run_oci`)
One thing to note about railcar is that it completely lacks the network stack, but it will probably be my "starting point" if someday I decide to evolve `rabbitc` into something "more serious".
For learning purposes I created quic[0]. I wanted to strip it down to the bare minimum for running something in a "container". I got as far as having it use a preexisting network namespace. The networking part felt like a major piece of work (setting up the network in bash was tedious) so I figured I'd call it a day and leave it as is. Lots of fun and learned a lot about containers/namespaces in the process.
Wasn't Python and Postgresql intentionally created for learning purposes? I'm not saying that this project is just as important, just pointing out that "learning purposes" is not a good predictor of a useless project.
Though I've never really heard of folks using OCI runtimes other than `runc` and kata/clearcontainers. (edit: I guess Chromium uses `run_oci`)