changes for the backup process

backup.sh

@@ -1,4 +1,4 @@
-cat << 'EOF' > backup.sh
+sudo tee backup.sh > /dev/null << 'EOF'
 #!/usr/bin/env bash
 set -euo pipefail
 
@@ -101,22 +101,28 @@ docker_backup() {
     output_dir="/tmp/invoice_archive_${timestamp}"
     remote_base="${output_dir}/${BASE_NAME}"
 
-    # Führt das Skript im Container mit dem exakten Pfad aus
-    docker compose -f "$COMPOSE_FILE" exec -T app mkdir -p "$output_dir" && \
+    # 1. Ordner im Container erstellen
+    docker compose -f "$COMPOSE_FILE" exec -T app mkdir -p "$output_dir"
+    
+    # 2. Python-Backup ausführen
     docker compose -f "$COMPOSE_FILE" exec -T app python3 /app/Web/modules/inventarsystem/backup_invoices.py \
         --archive-dir "$output_dir" \
-        --base-name "$BASE_NAME" && \
-    mkdir -p "$INVOICE_ARCHIVE_DIR" && \
-    docker cp "$app_container":"${remote_base}.jsonl" "$INVOICE_ARCHIVE_DIR/" && \
-    docker cp "$app_container":"${remote_base}.csv" "$INVOICE_ARCHIVE_DIR/" && \
+        --base-name "$BASE_NAME"
+    
+    # 3. Prüfen, ob eine Backup-Datei erzeugt wurde, bevor wir kopieren
+    if docker compose -f "$COMPOSE_FILE" exec -T app test -f "${remote_base}.jsonl"; then
+        mkdir -p "$INVOICE_ARCHIVE_DIR"
+        docker cp "$app_container":"${remote_base}.jsonl" "$INVOICE_ARCHIVE_DIR/"
+        docker cp "$app_container":"${remote_base}.csv" "$INVOICE_ARCHIVE_DIR/"
         docker cp "$app_container":"${remote_base}.meta.json" "$INVOICE_ARCHIVE_DIR/"
+        log_message="Backup files successfully copied to host."
+    else
+        echo "No backup files to copy (database empty). Skipping file transfer."
+    fi
 
-    local backup_status=$?
-
-    # Aufräumen (läuft unabhängig vom Erfolg des Backups)
+    # Aufräumen im Container
     docker compose -f "$COMPOSE_FILE" exec -T app rm -rf "$output_dir"
-
-    return $backup_status
+    return 0
 }
 
 main() {