Update Dockerfile

Dockerfile

@@ -86,7 +86,6 @@ class MyHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):\n\
         return super().do_GET()\n\
     \n\
     def guess_type(self, path):\n\
-        mimetype, encoding = super().guess_type(path)\n\
         # Add audio MIME types\n\
         if path.endswith(".mp3"):\n\
             return "audio/mpeg"\n\
@@ -94,7 +93,8 @@ class MyHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):\n\
             return "audio/wav"\n\
         elif path.endswith(".ogg"):\n\
             return "audio/ogg"\n\
-        return mimetype, encoding\n\
+        else:\n\
+            return super().guess_type(path)\n\
 \n\
 PORT = int(os.environ.get("PORT", 7860))\n\
 files = os.listdir(".")\n\