default for driver set

app.py

@@ -6,7 +6,7 @@
 app.secret_key = os.urandom(64)
 app.config['MAX_CONTENT_LENGTH'] = 2 * 1024 * 1024
 
-DB_DRIVER = "JSON"  # JSON or SQLITE
+DB_DRIVER = os.environ.get("DRIVER") or "SQLITE"  # JSON or SQLITE
 DATAFILE = os.environ.get("DATA_PATH") or "data/data.json"
 PASSPHRASE = os.environ.get("RECIPE_PASSPHRASE") or "ichessegernekuchen"