A lot of my work is moving to .NET Core. I really like the Cloud 9 concept and am starting to use it for node.js, and would really like to use it for .NET Core. It runs natively on Linux so hopefully wouldn’t be much work to support it.
I made an addition to their template repo but now they are “no longer accepting” new templates. The pull request is hyperlinked here: c9/templates. It was approved up to the point when someone had a Dockerfile for RC1, but .NET shortly scrapped use of Mono and DNX/DNVM should after that and the rest was history.