L2TP Docker

.env

VPN_IPSEC_PSK=secret
VPN_USER=user
VPN_PASSWORD=pass
VPN_ADDL_USERS=user2 user3
VPN_ADDL_PASSWORDS=pass2 pass3

docker-compose.yml

version: '3'
services:
  vpn:
    image: hwdsl2/ipsec-vpn-server:latest
    ports:
      - "500:500/udp"
      - "4500:4500/udp"
    restart: always
    privileged: true
    env_file:
      - ./.env
    logging:
      driver: "json-file"
      options:
        max-size: "3m"
        max-file: "5"
    volumes:
      - ./vpn-data:/etc/ipsec.d
      - /lib/modules:/lib/modules:ro