user that is in default odoo configuration file is not present in the database, so use another default

The Odoo 10 base image now merges addons, same as the Odoo 11 one.

 use correct configuration file in odoo 11 or 12 when binding to local configuration file

thanks to atexit, postgresql stops correctly at exit

 change pg container name to contain project name to be able to start several projects in parallel