Docker: `Cannot start service nginx`

While developing amongst many projects, you may encounter this error when using docker; more specifically docker-compose:

ERROR: for {container_name} Cannot start service nginx: driver failed programming external connectivity on endpoint {container_name} ({hash}): Error starting userland proxy: Bind for 0.0.0.0:80: unexpected error (Failure EADDRINUSE)

As a MAC user, the fix is simply to disable the locally running apache instance, allowing docker to forward port 80 locally from the nginx container (in my case).