Add cron job setup and entrypoint script for scheduled task execution

entrypoint.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Load the cron job
+crontab /app/crontab
+
+# Create the log file and set permissions
+touch /var/log/cron.log
+chmod 0666 /var/log/cron.log
+
+# Start cron in the foreground
+cron -f