diff --git a/src/portal/docker-build/README.md b/src/portal/docker-build/README.md
index 7e0b451a1..c1a681e2f 100644
--- a/src/portal/docker-build/README.md
+++ b/src/portal/docker-build/README.md
@@ -8,9 +8,11 @@ Steps to deploy Harbor UI in a nginx container, it can be used for testing
 
 `cp nginx.conf.example nginx.conf`
 
-`location ~ /(api|c)/* {
-   proxy_pass  ${an available back-end server addr};
- }`
+`
+location ~ ^/(api|c|chartrepo)/ {
+   proxy_pass ${an available back-end server addr};
+}
+`
 
 3. Build harbor-ui image
 
diff --git a/src/portal/docker-build/nginx.conf.example b/src/portal/docker-build/nginx.conf.example
index 9713830dd..5b970aa0b 100644
--- a/src/portal/docker-build/nginx.conf.example
+++ b/src/portal/docker-build/nginx.conf.example
@@ -34,8 +34,9 @@ http {
             add_header Cache-Control "no-store, no-cache, must-revalidate";
         }
 
-        location ~ /(api|c|chartrepo)/* {
-             proxy_pass  https://example.com;
+
+        location ~ ^/(api|c|chartrepo)/ {
+            proxy_pass https://example.com;
         }
     }
 }