services:
  derp-server:
    build:
      context: .
      args:
        DERP_HOST_ARG: ${DERP_HOST:-derp.selfhost}
    container_name: tailscale-derp
    ports:
      - "6666:6666/tcp"
      - "7777:7777/udp"
    environment:
      - TZ=Asia/Shanghai
      - DERP_HOST=${DERP_HOST:-derp.selfhost}
      - DERP_PORT=6666
      - STUN_PORT=7777
      - HTTP_PORT=-1
      - VERIFY_CLIENTS=true
    volumes:
      - /var/run/tailscale:/var/run/tailscale
    restart: unless-stopped