@work (using Red Hat) we have the notion of npa users, these users are normally for services or applications (git, mysql, nginx etc) and these users can't login themselves. Only as a login authorized user you can
sudo su to that user, using your own password:
sudo su - git
which brings me, after specifying my own password, to the git account without the need to specify or store a password for the git account. How can I get the same behaviour in Ubuntu?