Describe the bug

Startup event handlers for sub-applications never trigger.

To Reproduce

from fastapi import FastAPI


sub_app = FastAPI(openapi_prefix="/subapp")


@sub_app.on_event("startup")
async def sub_app_startup():
    print("++++ Sub-app startup event")  # Never fires


app = FastAPI()


@app.on_event("startup")
async def app_startup():
    prin

背景描述

最近才开始了解项目，正在看文档，中文的文档在访问的时候会出现无法访问情况。简单查了一下服务好像不在国内

重点描述遇到的问题：在国内访问文档不稳定

期望的功能特性

期望 文档服务器在国内可以有镜像

This project needs comprehensive documentation. Optimally, it would be stored on ReadTheDocs.

The documentation should include a guide how to use Motor-ODM.