OpenVPN via Docker builds

Build Environment
1

Hi,

Im trying to run openvpn within docker, but I’m seeing the following error trying to connect the tun device.

docker run -it --cap-add=NET_ADMIN --device /dev/net/tun --name vpn -d dperson/openvpn-client -v '$VPN_SERVER;$VPN_USER;$VPN_PASSWORD'
Unable to find image 'dperson/openvpn-client:latest' locally
latest: Pulling from dperson/openvpn-client



Digest: sha256:86a8216f54a8ef32f90d3bcd366ea106ac939cb9dd8e1d7430ec8dd8b17ec963
Status: Downloaded newer image for dperson/openvpn-client:latest
a705f5c11c7cdb7de61ab121af7b1d6c65766191701f42199201cd32e8a6bd06
docker: Error response from daemon: error gathering device information while adding custom device "/dev/net/tun": lstat /dev/net/tun: no such file or directory.

docker run -it --cap-add=NET_ADMIN --device /dev/net/tun --name vpn -d dperson/openvpn-client -v '$VPN_SERVER;$VPN_USER;$VPN_PASSWORD' returned exit code 125

Action failed: docker run -it --cap-add=NET_ADMIN --device /dev/net/tun --name vpn -d dperson/openvpn-client -v '$VPN_SERVER;$VPN_USER;$VPN_PASSWORD'
2

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