Use argument list as array items

backup_podman_volumes

@@ -2,19 +2,21 @@
 
 set -euo pipefail
 
+if [ "$#" -eq 0 ]; then
+    echo "Enter one or more Podman volume names."
+    exit 1
+fi
+
 BACKUP_DIR="${HOME}/podman_volume_backups"
 DATE=$(date '+%Y-%m-%d_%H%M%S')
 
-volumes=(
-    "grafana-storage"
-    "semaphore_semaphore-mysql"
-)
+volumes=("$@")
 
 for vol in "${volumes[@]}"; do
     podman volume export "$vol" --output "${BACKUP_DIR}/${vol}-${DATE}.tar"
     gzip "${BACKUP_DIR}/${vol}-${DATE}.tar"
 done
 
-find "$BACKUP_DIR" -maxdepth 1 -mtime +7 -type f -delete
+find "$BACKUP_DIR" -maxdepth 1 -mtime +3 -type f -delete
 
 exit 0