Update app.py

app.py

@@ -239,7 +239,7 @@ def process_uploaded_file(file):
         size = len(content_raw)    # Compute size in bytes
         
         mime_type, _ = mimetypes.guess_type(filename)
-        is_text = (mime_type and mime_type.startswith('text')) or file_extension in ['py', 'md', 'txt', 'js', 'html', 'css', 'json']
+        is_text = (mime_type and mime_type.startswith('text')) or file_extension in ['py', 'md', 'txt', 'js', 'html', 'css', 'json'] or "Dockerfile" in file_path
         
         if is_text:
             try: