diff --git a/infra/docker/nginx.conf b/infra/docker/nginx.conf
old mode 100644
new mode 100755
index ea1c9587c..cd44ef4f7
--- a/infra/docker/nginx.conf
+++ b/infra/docker/nginx.conf
@@ -18,12 +18,19 @@ server {
     }
 
     # API proxy
+    # Use static proxy_pass with container name to avoid URI stripping issues
+    # that occur with variable-based proxy_pass (set $upstream ...).
+    # DNS resolver kept for container IP refresh on restart.
+    resolver 127.0.0.11 valid=10s;
+    resolver_timeout 5s;
     location /api/ {
-        proxy_pass http://api:8000/api/;
+        proxy_pass http://xiaoxia-api-staging:8000/api/;
         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_read_timeout 300s;
+        proxy_send_timeout 300s;
         proxy_request_buffering off;
     }
 
diff --git a/infra/docker/web.Dockerfile b/infra/docker/web.Dockerfile
old mode 100644
new mode 100755
index 85c26776f..debf6aff9
--- a/infra/docker/web.Dockerfile
+++ b/infra/docker/web.Dockerfile
@@ -12,8 +12,9 @@ RUN npm run build
 
 # Production stage with nginx
 FROM docker.m.daocloud.io/library/nginx:alpine AS runner
+ARG NGINX_CONF=infra/docker/nginx.conf
 WORKDIR /usr/share/nginx/html
 COPY --from=builder /app/apps/web/dist ./
-COPY infra/docker/nginx.conf /etc/nginx/conf.d/default.conf
+COPY ${NGINX_CONF} /etc/nginx/conf.d/default.conf
 EXPOSE 80
 CMD ["nginx", "-g", "daemon off;"]