Update app/database.py

app/database.py

@@ -1,7 +1,9 @@
 from sqlalchemy import create_engine
 from sqlalchemy.orm import declarative_base, sessionmaker
 
-DATABASE_URL = "sqlite:///./course.db"
+# Use the 'data' folder we created in Dockerfile
+DATA_DIR = os.path.join(PROJECT_DIR, "data")
+DATABASE_URL = f"sqlite:///{os.path.join(DATA_DIR, 'course.db')}"
 
 engine = create_engine(
     DATABASE_URL, connect_args={"check_same_thread": False}