docker-pptp

docker pull ubuntu
sudo modprobe nf_conntrack_pptp
echo nf_conntrack_pptp | sudo tee /etc/modules-load.d/pptp.conf

docker run -it --privileged=true ubuntu:latest /bin/bash

apt-get -y update
apt-get -y install vim net-tools pptp-linux inetutils-ping curl

cat /etc/ppp/chap-secrets

# Secrets for authentication using CHAP
# client    server  secret          IP addresses
test PPTP 123456 *

cat /etc/ppp/peers/ctu_vpn

pty "pptp x.x.x.x --nolaunchpppd" 
name test  
remotename PPTP 
ipparam ctu_vpn
require-mppe-128
file /etc/ppp/options.pptp

測試

pon ctu_vpn debug dump logfd 2 nodetach

啓動

pon ctu_vpn
ip route replace default dev ppp0

參考：
http://blog.csdn.net/mengfanzhong/article/details/56836750?locationNum=4&fps=1
https://hub.docker.com/r/lihaixin/pptp/