feat: add support for CORS origin regex configuration

Author: Mini256

backend/app/core/config.py

@@ -60,6 +60,7 @@ def server_host(self) -> str:
     BACKEND_CORS_ORIGINS: Annotated[
         list[AnyUrl] | str, BeforeValidator(parse_cors)
     ] = []
+    BACKEND_CORS_ORIGIN_REGEXP: str | None = None
 
     PROJECT_NAME: str = "TiDB.AI"
     SENTRY_DSN: HttpUrl | None = None

backend/main.py

@@ -93,6 +93,7 @@ async def lifespan(app: FastAPI):
         allow_origins=[
             str(origin).strip("/") for origin in settings.BACKEND_CORS_ORIGINS
         ],
+        allow_origin_regex=settings.BACKEND_CORS_ORIGIN_REGEXP,
         allow_credentials=True,
         allow_methods=["*"],
         allow_headers=["*"],