Add cron job setup and entrypoint script for scheduled task execution

Dockerfile

@@ -1,11 +1,17 @@
 FROM python:3.9-slim-buster
 
+# Install cron
+RUN apt-get update && apt-get -y install cron
+
 WORKDIR /app
 
 COPY requirements.txt .
-
 RUN pip install --no-cache-dir -r requirements.txt
 
 COPY . .
 
-CMD ["python", "main.py"]
+# Make entrypoint script executable
+RUN chmod +x /app/entrypoint.sh
+
+# Set the entrypoint
+ENTRYPOINT ["/app/entrypoint.sh"]