Dockerfile exposes port 80, but runs on port 9000

[kentora]

The Dockerfile exposes port 80 (Inherited from tiangolo/uvicorn-gunicorn-fastapi which in turn inherits it from tiangolo/uvicorn-gunicorn), but the cmd in the dockerfile runs uvicorn on port 9000. I don't think there's any problem in running on port 80 in docker, since nothing else will run on the containers port 80 - and users can map the port however they like (The docker-compose.yml already maps to a different port than 9000).