Update Dockerfile

Dockerfile

@@ -37,11 +37,14 @@ COPY tests/ /app/tests/
 # Copy data files with correct permissions
 COPY --chown=1000:1000 data/ /app/data/
 
-# Verify data files
+# Debug: List files in /app/data/
+RUN ls -l /app/data/
+
+# Verify data files or create chat_history.json if missing
 RUN python -c "\
 import os, json; \
 assert os.path.exists('/app/data/rupeia_document.json'), 'Data file missing'; \
-assert os.path.exists('/app/data/chat_history.json'), 'History file missing' \
+if not os.path.exists('/app/data/chat_history.json'): open('/app/data/chat_history.json', 'w').write('{}') \
 "
 
 # Download models during build