feat: added checks and loads the cron job

start.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+: ${WEBSITES:?"Environment variable WEBSITES is required but not set."}
+: ${WEBHOOK_URL:?"Environment variable WEBHOOK_URL is required but not set."}
+: ${DISCORD_ID:?"Environment variable DISCORD_ID is required but not set."}
+
+# Create a new temporary crontab file
+temp_cron_file="/tmp/crontab_with_envs"
+
+echo "PATH=$PATH" > $temp_cron_file
+echo "WEBSITES=$WEBSITES" >> $temp_cron_file
+echo "WEBHOOK_URL=$WEBHOOK_URL" >> $temp_cron_file
+echo "DISCORD_ID=$DISCORD_ID" >> $temp_cron_file
+
+# Append the cron configuration to the temp cron configuration file
+cat $CRON_CONFIG >> $temp_cron_file
+
+# Load the new crontab file
+crontab $temp_cron_file
+
+# Start cron
+cron -f