Inspect the mangum handled API locally on in Docker container on open port

[Ammar-Azman]

Details

I have created API by using FastAPI and handle it using Mangum. I containerized it using Dockerfile and expose it on port 8000. My CMD line will be

# dockerfile
CMD ["prod.main_api.handler"]

The handler worked well with the following output

[INFO] (rapid) exec '/var/runtime/bootstrap' (cwd=/var/task, handler=)

Before I used Mangum, I can inspect the API on the connected port with the following Dockerfile line

CMD ["uvicorn", "prod.main_api:app", "--reload", "--host", "0.0.0.0", "--port", "80"]

Question

How can I inspect the API on port 8000 like I can do when running without Mangum? I have tried to include the port in CMD ["prod.main_api.handler"], but it only allowed single params compare to run with uvicorn. Anyone can help me? Thank you.