add numpy installation

Dockerfile

@@ -12,6 +12,7 @@ RUN pip install --upgrade pip
 
 # Install any needed packages specified in requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir numpy==1.21.0
 
 # Create directories for NLTK and Hugging Face cache data
 RUN mkdir -p /app/nltk_data /app/.cache/huggingface /app/.huggingface_cache