fix(backup): update security context in cron job and improve backup script logging

terraform/modules/utils/scw_rclone/resources/backup.sh

@@ -16,20 +16,24 @@ if [ -z "$BACKUP_RETENTION" ]; then
   exit 1
 fi
 
-# Create rclone config (Scaleway)
-envsubst < /etc/rclone.conf.tmpl > /tmp/rclone.conf
-unset $SCW_ACCESS_KEY
-unset $SCW_SECRET_KEY
-
+# install required packages
 apk update
 apk add gettext
 
+# Create rclone config (Scaleway)
+envsubst < /etc/rclone.conf.tmpl > /tmp/rclone.conf
+unset SCW_ACCESS_KEY
+unset SCW_SECRET_KEY
+
 # Create backup
+echo "Creating backup of /src directory"
 tar -zcvpf /backup/$APP_NAME-files-`date +\"%Y%m%d\"`.tar.gz /src
 
 # Remove old backups
 BACKUP_FILE_PATTERN="$APP_NAME-files-*.tar.gz"
+echo "Removing old backups matching pattern: $BACKUP_FILE_PATTERN"
 find /backup -type f -name "$BACKUP_FILE_PATTERN" -mtime +$BACKUP_RETENTION | xargs --no-run-if-empty rm
 
 # Upload to Scaleway
-/usr/local/bin/rclone --config=/tmp/rclone.conf sync --progress /backup scaleway:$BUCKET_NAME/$APP_NAME-backup"
+echo "Uploading backup to Scaleway bucket"
+/usr/local/bin/rclone --config=/tmp/rclone.conf sync --progress /backup "scaleway:$BUCKET_NAME/$APP_NAME-backup"