Clean up makefile

[veekaybee]

Description

The Makefile for local gitfeed development and remote differs since we have different purposes: local development versus deployment and cross-platform support for killing running processes across Mac and Linux machines. We want to be able to spin up the entire application with one makefile command that is consistent across platforms.

Steps

1. Consolidate Makefile and CI/CD commands
2. Make sure commands are Mac/Linux compatible.
3. Clean up Makefile