作為Docker以及Ngnix的配置新手我卡關了

我在嘗試以docker來scale up Rails系統 在沒有Ngnix時我是能夠成夠運行Rails系統的

但當使用nginx-proxy後及Scale up後我發現rails不能再指定某個port了 而且proxy也不能指向Rails系統群作load balancing

同時有沒有關於Ngnix配置的常數作參考？ 我的docker-compose.yml配置如下

version: '3'
services:
  db:
    container_name: 'postgresql'
    image: postgres
    ports:
      - '5432:5432'
  redis:
    container_name: 'redis'
    image: 'redis:4.0.8-alpine'
    command: redis-server --requirepass yourpassword
    ports:
      - '6379:6379'
    volumes:
      - 'redis:/data'
  web:
    build: .
    command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s"
    volumes:
      - .:/mapAPI
    env_file:
      - '.env'
    depends_on:
      - db
      - redis
  sidekiq:
    depends_on:
      - 'db'
      - 'redis'
    build: .
    command: bundle exec sidekiq -C config/sidekiq.yml
    volumes:
      - '.:/mapAPI'
    env_file:
      - '.env'
  proxy:
    image: jwilder/nginx-proxy:latest
    ports:
      - "80:80"
    volumes:
      - "/var/run/docker.sock:/tmp/docker.sock"
volumes:
  redis:
  postgres: