改变nginx容器名称为prnginx，精简代理头设置。

docker-compose.yaml

@@ -1,7 +1,7 @@
 services:
   nginx:
     image: nginx:latest
-    container_name: nginx
+    container_name: prnginx
     ports:
       - "10008:80"
     volumes:

static/nginx/pr.conf

@@ -15,8 +15,6 @@ server {
     proxy_set_header Access-Control-Allow-Origin *;
     proxy_set_header Access-Control-Allow-Methods *;
     proxy_set_header Access-Control-Allow-Headers *;
-    proxy_set_header Upgrade $http_upgrade;
-    proxy_set_header Connection $connection_upgrade;
     proxy_pass       http://backend:18000;
   }
 }