Hi.. What you thing about `2.4.0` support? I'm trying to run [OssFriday](https://github.com/ossfriday/ossfriday) that requires ruby-2.4.0 and i want to do it using azk environment.. _____ I can create the docker image with 2.4.0 and do a PR do this repo if you permiss.. Regards.. 👶
