nukkit+nginxのdocker-composeをたててnginx reverse proxy経由でnukkitへ

default.conf.template

worker_processes 2;

events {
    worker_connections 1024;
}

stream {
    log_format proxy '$remote_addr [$time_local] '
                     '$protocol $status $bytes_sent $bytes_received '
                     '$session_time "$upstream_addr" '
                     '"$upstream_bytes_sent" "$upstream_bytes_received" "$upstream_connect_time"';

    upstream minecraft_udp_upstreams {
        server ${MINECRAFT_PORT_19132_UDP_ADDR}:19132;
    }

    server {
        error_log /var/log/nginx/error.log debug;
        access_log /var/log/nginx/access.log proxy buffer=32k;
        listen 19132 udp;
        proxy_pass minecraft_udp_upstreams;
        proxy_timeout 60s;
    }
}

nukkit+nginxリバプロのdocker-compose.yml

version: '3.3'

networks:
  nukkit-test:
    external: false

services:

  # nukkitサーバー本体のコンテナ
  mc-nukkit:
    image: ixilon/nukkit:latest
    environment:
      - TZ=Asia/Tokyo
    volumes:
      - ./nukkit-data:/srv/nukkit
    networks:
      - nukkit-test

  # nginx-proxy
  nginx-proxy:
    image: nginx
    environment:
      - MINECRAFT_PORT_19132_UDP_ADDR=mc-nukkit
    ports:
      # ホストアドレス:19132/udp でアクセス可能とする
      - 19132:19132/udp
    networks:
      - nukkit-test
    depends_on:
      - mc-nukkit
    command: /bin/sh -c "envsubst '$$MINECRAFT_PORT_19132_UDP_ADDR' < /etc/nginx/conf.d/default.conf.template > /etc/nginx/nginx.conf && nginx -g 'daemon off;'"
    volumes:
      - ./default.conf.template:/etc/nginx/conf.d/default.conf.template
      - ./nginx-log:/var/log/nginx