带有 nginx 的 FastAPI 应用程序 - StaticFiles 不起作用

我有一个简单的 FastAPI 项目。它在 Pycharm 和 Docker 容器中运行正常。但通过 nginx 运行时，StaticFiles无法交付。

结构是这样的：

├── app
│   ├── main.py
│   ├── static_stuff
│   │   └── styles.css
│   └── templates
│       └── item.html
├── Dockerfile
├── requirements.txt

主程序

from fastapi import Request, FastAPI
from fastapi.responses import HTMLResponse
from fastapi.staticfiles import StaticFiles
from fastapi.templating import Jinja2Templates
import os.path as path


ROOT_PATH =  path.abspath(path.join(__file__ ,"../"))

app = FastAPI(title="my_app", root_path='/my_app')
app.mount("/static_stuff", StaticFiles(directory=f"/{ROOT_PATH}/static_stuff"), name="static")
templates = Jinja2Templates(directory=f"/{ROOT_PATH}/templates")


@app.get("/items/{id}", response_class=HTMLResponse, include_in_schema=False)
async def read_item(request: Request, id: str):
    return templates.TemplateResponse(
        request=request, name="item.html", context={"id": id}
    )

该应用程序正在docker容器中运行：

Dockerfile：

FROM python:3.13-slim
WORKDIR /my_app
COPY requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt
COPY app ./app
CMD ["gunicorn",  "-k",  "uvicorn.workers.UvicornWorker", "app.main:app", "--bind",  "0.0.0.0:6543"]

EXPOSE 6543

nginx 配置如下：

location /my_app {
    proxy_pass        http://my_host:6543;
    include           proxy_params;
}

当调用 nginx -> http://my_host/my_app/items/5

除了静态文件之外，一切正常。找不到styles.css。我做错了什么？

我尝试过类似的方法，但没有成功

location ~ /static_stuff/(.+) {
    proxy_pass        http://my_host:6543;
    include           proxy_params;
}