Default using project name from CI/DRONE, and default to directory project name as a last resort.
 fix that last point as it was using project_name_from_home instead of the variable of the same name

Also changed to have a single  image with all the scripts inside

And stop trying to find version of odoo, it will either not work (like in most cases),
or it will be listed in the pip freeze listing

docker_build: copy modules (defined in setup.cfg in superproject to a new directory for docker to do)