Updated clone of this repo

[aminvakil]

I've contacted original maintainer of this repo and he hasn't replied me yet, so I'm writing it here.

For future users of this docker repo, you can checkout my repo which is updated, fixes bugs and other improvements, please use it and give feedback if you want.

https://github.com/aminvakil/docker-ocserv

Thanks for your great repo! @TommyLau