docker-compose 文件是这样的。websocket服务运行在web 中的8001端口，如何被nginx识别并反代。

version: "2"

volumes:
  local_postgres_data: {}
  local_postgres_data_backups: {}

services:
  nginx:
    image: nginx:alpine
    container_name: nz01
    ports:
      - "8000:8000"
    volumes:
      - ./src:/src
      - ./config/nginx:/etc/nginx/conf.d
    depends_on:
      - web
    networks:
      - djangonetwork
  web:
    image: dockerdjango_web
    container_name: dz01
    ports:
      - 8000
      - 8807:8807
      - 8001:8001
      - 8002:8002
      - 5678:5678
    depends_on:
      - db
    volumes:
      - ./src:/src
      - ./note:/note
      - ./jupyter:/root/.jupyter
    expose:
      - "8000"
    links:
      - redis
    env_file:
      - ./.envs/.django
    networks:
      - djangonetwork
  db:
    image: dockerdjango_db
    container_name: pz01
    env_file:
      - ./.envs/.postgres
    ports:
      - "5432:5432"
    volumes:
      - local_postgres_data:/var/lib/postgresql/data
      - local_postgres_data_backups:/backups
      - ./dback:/dback
    networks:
      - djangonetwork
  redis:
    image: redis:alpine
    container_name: rz01
    ports:
      - "6379:6379"
    networks:
      - djangonetwork
networks:
  djangonetwork:
    driver: bridge

nginx的配置是

client_max_body_size 1000M;
fastcgi_intercept_errors on;
proxy_intercept_errors on;
proxy_ignore_client_abort on;
upstream web {  
  ip_hash;
  server web:8000;
}
upstream channels-backend {
    server web:8001;
}
map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}
server {
    # error_page  403  /error/403;
    # error_page  404  /error/404;
    # error_page  500 503 502  /error/500;
    # location /error {    
    #     autoindex on;    
    #     alias /src/error/; 
    # }
    error_page 405 =200 $uri; 

    location /static {    
        autoindex off;    
        alias /src/static/; 
    }

    location /media {
        autoindex off;
        alias /src/media/;
    }
    location /home {
        autoindex off;
        alias /src/home/;
    }
    location /plugin {
        autoindex off;
        alias /src/plugin/;
    }
    location /observer {
        proxy_pass http://dz01:8001;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout   3600s; 
    }

    location /jupyter {
        proxy_pass http://dz01:8807/jupyter;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header REMOTE-HOST $remote_addr;
        proxy_connect_timeout 30s;
        proxy_read_timeout 86400s;
        proxy_send_timeout 30s;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";        
        expires 12h;
    }
    location / {
        proxy_pass http://web/;
        # proxy_redirect off;
        # proxy_set_header Host $http_host;
        # proxy_set_header X-Real-IP $remote_addr;
        # proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    
    listen 8000;
    server_name localhost;
}