update comment

docker/nginx.conf

@@ -22,6 +22,20 @@ http {
     root /var/www/html;
     index index.html index.htm;
 
+    # TCP optimizations
+    tcp_nopush on;
+    tcp_nodelay on;
+
+    # Gzip
+    sendfile on;
+    gzip on;
+    gzip_disable "msie6";
+    gzip_vary on;
+    gzip_proxied any;
+    gzip_comp_level 8;
+    gzip_buffers 16 64k;
+    gzip_types text/plain text/css application/json application/javascript application/x-javascript text/xml application/xml application/xml+rss text/javascript;
+
     client_max_body_size 500M; # Will get replaced by the environment variable MAX_UPLOAD_SIZE
 
     location /upload.php {
@@ -38,8 +52,12 @@ http {
     location / {
       expires 7d;
 
+      open_file_cache max=1000 inactive=60s;
+      open_file_cache_valid 60s;
+      open_file_cache_min_uses 1;
+      open_file_cache_errors on;
+
       # Serve the file directly from disk
       try_files $uri $uri/ =404;
     }
 }
-}

upload.php

@@ -93,7 +93,7 @@ try {
   $secret = $_POST['secret']; // The secret key
   $file = $_FILES['sharex']; // The uploaded file
 
-  // Page to show if someone visits the upload page
+  // Page to show if someone visits the upload script
   if (!$secret && !$file) {
     returnJson(array(
       'status' => 'OK',