no caching chart files

docker/taiko-web-nginx.conf

@@ -17,6 +17,9 @@ server {
 		location ~ ^/songs/([0-9]+)/preview\.mp3$ {
 			try_files $uri /api/preview?id=$1;
 		}
+		location ~ ^/songs/([0-9]+)/*\.(tja|osu)$ {
+			add_header Cache-Control no-store;
+		}
 	}
 
 	location /p2 {