Understandable. There are always some small thing you just want to change,
and that is the point where one might want to compile manually. For
example, in Marcel's case, he just needed a Windows VM that has no
memory-cap of 512 MB, and he just wanted to compile a Cog VM with
more Memory. Setting up an automated build for this small task
seems overkill to me.
  However, in most other cases, continuous integration is clearly the
way to go!

Best
        -Tobias