docker tun device into container

README.md

Docker tun device into container install openvpn or other soft, which uses tun devices

docker-cmpose.yaml

version: "3"

services:
  rsync_server:
    container_name: openvpn
    image: 'myopenvpn'
    environment:
      TZ: "Asia/Shanghai"
    cap_add:
      - NET_ADMIN
    restart: always
    devices:
      - "/dev/net/tun"
    volumes:
      - $PWD/pi3.ovpn:/etc/openvpn/openvpn.conf
      - $PWD/start_vpn.sh:/bin/start_vpn.sh
    command: >
      bash -c "echo '开始 openvpn';
      iptables -o eth0 -t nat -I POSTROUTING -j MASQUERADE;
      openvpn --config /etc/openvpn/openvpn.conf"

docker.sh

docker run -d --name tundevica \
  --cap-add=NET_ADMIN \
  --device /dev/net/tun \
  ubuntu tail -f /dev/null