[services] Separate build and run server

Summary:
Make build and run server separate so the build is run when the image is being built and the run is run when the container is being run.

https://linear.app/comm/issue/COM-95/make-the-port-configurable

Test Plan: -

Reviewers: palys-swm, geekbrother, ashoat

Reviewed By: palys-swm, ashoat

Subscribers: ashoat, palys-swm, Adrian, atul, benschac, boristopalov

Tags: #aws_implement_services

Differential Revision: https://phabricator.ashoat.com/D2317