I think I answered this question here:
https://lists.cloudfoundry.org/archives/list/cf-dev(a)lists.cloudfoundry.org/message/FJK25F3BNLEFJVGHFHF5QWB3ETNQSSF3/

Dan

On Thu, Sep 14, 2017 at 4:27 AM, Ushani Balasooriya <ushanib(a)gmail.com>
wrote:

My application is developed in a way as it starts on the port 9763 http
transport
Also there is a feasibility to change the port by giving an offset to run
it in a different port.

My question is, in Diego container, is there a particular port where I
should write my app to run? Or If i deploy it just as it is, should it be
able to run on port 9763?

Should I need to configure my app to start it in a different port like
8080 or 8000? If so why and what is that port?

Appreciate your help