The role takes over the deployment of netbox and its dependencies, while
still requiring the user to provide the netbox version, db password and
config as well as to set up a web server and handle stuff like creating
users, etc.
Add postgresql role for ensuring postgresql is installed.
Furthermore the role optionally takes some basic configuration to ensure
databases with their owners and users are set up as specified.
This is a requirement for a new netbox role.
Docker by default will use the container id as the journal tag when
logging into systemd-journal.
Using the container name makes easier to see which log belongs to which container.
