chore(docker): Move cron task logic to shell script

Also included a timestamp separator for readability

docker/scripts/prod/cron.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+set -e
+
+echo
+echo "-------------------------------------------------------------"
+echo " Executing Cron Tasks: $(date)"
+echo "-------------------------------------------------------------"
+echo
+
+recyclarr sonarr
+recyclarr radarr

docker/scripts/prod/entrypoint.sh

@@ -16,8 +16,7 @@ if [ "$#" -gt 0 ]; then
     su-exec recyclarr recyclarr "$@"
 else
     echo "Creating crontab file..."
-    echo "$CRON_SCHEDULE recyclarr sonarr; recyclarr radarr" \
-        | crontab -u recyclarr -
+    echo "$CRON_SCHEDULE /cron.sh" | crontab -u recyclarr -
 
     crontab -l -u recyclarr