The helper bin/compose was using the option -p to set the compose
project name but this option is not used in the Makefile. This can lead
to different way to use the docker compose file definition with
different project name. In order to have a consistent name everywhere
and for everybody, we set the name in the docker compose file itself.
We have changed the project's name from "impress" to "docs" but haven't
replaced all occurrences of impress in the project because we want to be
careful of the consequences on deployments.
The name of the docker compose project was different for the "make pylint"
target. This was causing the bug error on ports. Let's rename it without
waiting.
