nginx 正在获取 GET / 请求，尽管它是错误的

Question

因此我使用 docker-compose 运行一个 nginx 容器：

services:
  nginx:
    build:
      context: .
      dockerfile: Dockerfile
    restart: always
    container_name: webserver_nginx
    hostname: nginx
    stop_grace_period: 1m30s

    healthcheck:
      test: ["CMD-SHELL", "curl -sf http://127.0.0.1/ -o /dev/null || exit 1"]
      interval: 1m30s
      timeout: 10s
      retries: 3
      start_period: 40s

    ports:
      - 443:443
      - 80:80

    volumes:
      # Service Restriction with password
      - ./.credentials/.htpasswd:/var/.credentials/.htpasswd

      # Nginx Configurations
      - ./nginx.conf:/etc/nginx/nginx.conf
      - ./proxy_params:/etc/nginx/proxy_params
      - ./conf:/etc/nginx/conf.d

      #Nginx serve static files
      - /var/backups/off:/var/web_data/off


      # Nginx Logging
      - /var/log/nginx:/var/log/nginx

    networks:
      - webserver_network

networks:
  webserver_network:
    external: true

Dockerfile：

FROM nginx

CMD ["nginx", "-g", "daemon off;"]

我的nginx.conf：

user nginx;
worker_processes auto;

error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log /var/log/nginx/access.log main;

    sendfile on;
    keepalive_timeout 65;

    include /etc/nginx/conf.d/*.conf;
}

并配置我的容器：

server {
  listen 80;
  listen [::]:80;

  server_name name.com;

  location /admin {
    proxy_pass http://off:4000;
    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_read_timeout 100;
    proxy_http_version 1.1;
  }
  location /static {
    alias /var/web_data/off/collectstatic;
  }

  location /media {
    alias /var/web_data/off/upload;
  }

  location / {
    return 404;
  }
}

因此，每当我尝试请求时，http://name.com/admin我都会从 access.log 中获取这种日志：

127.0.0.1 - - [16/May/2022:15:53:42 +0000] "GET / HTTP/1.1" 404 153 "-" "curl/7.74.0" "-"
127.0.0.1 - - [16/May/2022:15:55:12 +0000] "GET / HTTP/1.1" 404 153 "-" "curl/7.74.0" "-"
127.0.0.1 - - [16/May/2022:15:56:42 +0000] "GET / HTTP/1.1" 404 153 "-" "curl/7.74.0" "-"

并且我在浏览器上从 nginx 获得 502 网关错误，即使我尝试访问主站点，http://name.com/我仍然收到 502 错误，我的容器组合如下：

version: '3.8'

services:
  offch:
    build:
      context: .
      dockerfile: deploy/beta/Dockerfile
      args:
        WORKING_DIR: /app
    container_name: off
    hostname: django
    restart: 'always'

    command: gunicorn -c deploy/beta/configs/gunicorn/conf.py --chdir api api.wsgi:application

    volumes:
      # Source Code of project
      - .:/app
      # Collect Static files
      - /var/backups/offch/collectstatic:/collectstatic
      # Media Files (Uploads)
      - /var/backups/offch/upload:/app/media/upload
      - /var/log/upstart:/var/log/upstart

    stop_grace_period: 1m30s

    healthcheck:
      test: ["CMD", "curl", "-f", "http://127.0.0.1:4000"]
      interval: 1m30s
      timeout: 10s
      retries: 3
      start_period: 40s

    ports:
      - "4000:4000"

    networks:
      - webserver_network

networks:
  webserver_network:
    external: true

顺便说一句，我可以通过 IP 和端口访问该网站，只有在 nginx 上才有这个问题。