docker + datenhaltung refreshed

app/config.py

@@ -11,14 +11,21 @@ OIDC Discovery URL.
 """
 
 import os
+from pathlib import Path
 from dotenv import load_dotenv
 
 load_dotenv()
 
 
+def _db_uri() -> str:
+    data_path = Path(os.environ.get("DB_DATA_PATH", "./data")).resolve()
+    data_path.mkdir(parents=True, exist_ok=True)
+    return f"sqlite:///{data_path}/app.db"
+
+
 class Config:
     SECRET_KEY = os.environ.get("SECRET_KEY", "dev-secret-change-me")
-    SQLALCHEMY_DATABASE_URI = os.environ.get("DATABASE_URL", "sqlite:///app.db")
+    SQLALCHEMY_DATABASE_URI = _db_uri()
     SQLALCHEMY_TRACK_MODIFICATIONS = False
 
     ZITADEL_CLIENT_ID = os.environ.get("ZITADEL_CLIENT_ID")