Fix: use ^~ for Jenkins static assets to override regex

_docker/nginx/test/conf.d/nginx.conf

@@ -37,7 +37,7 @@ server {
         proxy_request_buffering off;
     }
 
-    location /static/ {
+    location ^~ /static/ {
         proxy_pass http://jenkins:8080;
         proxy_set_header Host $host;
     }