Add cache directory

Dockerfile

@@ -4,10 +4,12 @@ FROM python:3.9-slim
 # Environment variables to prevent Python from writing pyc files and buffering stdout/stderr
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
-
+ENV TRANSFORMERS_CACHE=/app/.cache
 # Set working directory inside the container
 WORKDIR /app
 
+RUN mkdir -p /app/.cache
+
 # Copy and install the backend requirements
 COPY backend/requirements.txt /app/backend/requirements.txt
 RUN pip install --upgrade pip