OpenVPN via Docker builds

[drazisil]

VPNs are not possible, please see https://circleci.com/blog/vpns-and-why-they-don-t-work/ for details.

Per this post is a possible workaround though

VPN connection from Build machine

Hi DoryZI You can’t create a tun/tap driver on lxc, Circleci made a blog post [1] explaining this. Nevertheless I create a proxy socks [2] to redirect all traffic to my internal network and solved this vpn problem. [1] https://circleci.com/blog/vpns-and-why-they-don-t-work/ [2] https://gist.github.com/gianrubio/dce37ee9b9c024937832d776597e2603