如何在docker上使用rails和nginx提供编译资源？

FROM ruby:2.7

# 安装Rails和相关依赖
RUN gem install rails bundler

# 设置工作目录
WORKDIR /app

# 复制项目文件到容器中
COPY . /app

# 安装项目依赖
RUN bundle install

version: '3'
services:
  web:
    build: .
    ports:
      - "3000:3000"
    volumes:
      - .:/app
    depends_on:
      - db
  db:
    image: postgres:12
    volumes:
      - ./tmp/db:/var/lib/postgresql/data

docker-compose up

version: '3'
services:
  web:
    build: .
    ports:
      - "3000:3000"
    volumes:
      - .:/app
    depends_on:
      - db
  db:
    image: postgres:12
    volumes:
      - ./tmp/db:/var/lib/postgresql/data
  nginx:
    image: nginx:latest
    ports:
      - "80:80"
    volumes:
      - ./nginx.conf:/etc/nginx/conf.d/default.conf
    depends_on:
      - web

server {
  listen 80;
  server_name localhost;

  location / {
    proxy_pass http://web:3000;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
  }
}

docker-compose up --build