Docker - 带自定义conf的nginx

Question

使用以下docker-compose up文件运行docker-compose.yml时，nginx会在启动后立即退出。当我删除以下行时：

- ./nginx/config:/etc/nginx/conf.d

nginx不会立即退出。

docker-compose.yml

version: '3'
services:
  nginx:
    image: nginx
    ports:
      - '8080:80'
    volumes:
      - ./nginx/log:/var/log/nginx
      - ./nginx/config:/etc/nginx/conf.d
      - ../wordpress:/var/www/wordpress
  php:
    image: php:fpm
    ports:
      - 9000:9000
  mysql:
    image: mysql
    ports:
      - "3306:3306"
    environment:
      MYSQL_ROOT_PASSWORD: secret
    volumes:
      - ./mysql/data:/var/lib/mysql

如何使用自定义nginx运行/etc/nginx/conf.d/default.conf？