修复: Nginx配置中/s/路径的proxy_set_header变量转义问题

- 在configure_nginx_http()和configure_nginx_https()中
- 将$host、$remote_addr等Nginx变量正确转义
- 修复'invalid number of arguments'错误

install.sh

@@ -1198,10 +1198,10 @@ server {
     # 分享页面（代理到后端处理重定向）
     location /s/ {
         proxy_pass http://localhost:${BACKEND_PORT};
-        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 X-Forwarded-Proto $scheme;
+        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 X-Forwarded-Proto \$scheme;
     }
 
     # 静态资源
@@ -1274,10 +1274,10 @@ server {
     # 分享页面（代理到后端处理重定向）
     location /s/ {
         proxy_pass http://localhost:${BACKEND_PORT};
-        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 X-Forwarded-Proto $scheme;
+        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 X-Forwarded-Proto \$scheme;
     }
 
     # 静态资源