nginx: Overwrite Proxy header

scripts/environment.sh

@@ -42,6 +42,7 @@ block="
             include fastcgi_params;
             fastcgi_param SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
             fastcgi_param LARA_ENV local; # Environment variable for Laravel
+            fastcgi_param HTTP_PROXY ""; # Fix for https://httpoxy.org/ vulnerability
             fastcgi_param HTTPS off;
         }