Refactor Dockerfile to use entrypoint script, update requirements for bcrypt, and enhance FastAPI app with optional user retrieval and improved error handling

app/services/auth.py

@@ -7,6 +7,18 @@ from app.db.session import get_db
 from app.models.user import User
 
 
+def get_optional_user(request: Request, db: Session = Depends(get_db)) -> User | None:
+    token = request.cookies.get("access_token")
+    if not token:
+        return None
+    try:
+        payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
+        user_id = int(payload.get("sub"))
+    except (JWTError, TypeError, ValueError):
+        return None
+    return db.query(User).filter(User.id == user_id, User.is_active.is_(True)).first()
+
+
 def get_current_user(request: Request, db: Session = Depends(get_db)) -> User:
     token = request.cookies.get("access_token")
     if not token: