diff --git a/.gitignore b/.gitignore
index 3598976..5facefe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,5 +2,6 @@ node_modules/
 data.db
 data.db-wal
 data.db-shm
+data/
 .env
 .DS_Store
diff --git a/db.js b/db.js
index a5a04e1..b853624 100644
--- a/db.js
+++ b/db.js
@@ -3,9 +3,16 @@ const path = require('path');
 const Database = require('better-sqlite3');
 const bcrypt = require('bcryptjs');
 
-const dbPath = path.join(__dirname, 'data.db');
+// Verzeichnis für Persistenz sicherstellen (/data im Docker Container oder local dir)
+const dataDir = process.env.DATA_DIR || (fs.existsSync('/data') ? '/data' : __dirname);
+if (!fs.existsSync(dataDir)) {
+  fs.mkdirSync(dataDir, { recursive: true });
+}
+
+const dbPath = path.join(dataDir, 'data.db');
 const db = new Database(dbPath);
 
+// Standard Journal Mode
 db.pragma('journal_mode = WAL');
 
 // Tabellen anlegen
diff --git a/docker-compose.yml b/docker-compose.yml
index 607c0b2..9e179b3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,5 +6,7 @@ services:
     restart: unless-stopped
     ports:
       - "8085:80"
+    environment:
+      - DATA_DIR=/data
     volumes:
-      - ./data.db:/app/data.db
+      - ./data:/data