Hey fica, Kong is a similar project which was developed about the same time with Ceryx. They are both similar in some ways and use cases, but were built for different reasons and goals. I was in a presentation of Kong recently and I can say that I was impressed with the effort they've put on there from Mashape.
I think that would a good separation of concerns, I didn't know Kong, but it seems that is more specialised tool supporting Oauth2, Rate limit, Ip filtering ..etc via plugins.
I would like to see both tools running in Docker and working together.
I started this public gist to explore this solution
https://gist.github.com/alfonsodev/6a6c66b4074248ed9702
feel free to comment and collaborate there.
[1] https://github.com/Mashape/kong