How to finish the installation of Loki in Debian 12 bookworm

Context

apt-get install loki did not let me start the service.

What I noticed

Just had a look at this file and decided to check if the user loki exists, and it did not :

/etc/systemd/system/loki.service
======
(Omitting)
[Service]
Type=simple
User=loki
(Omitting)

Extra Step

The following resolved to enable to run the service with systemctl restart loki :

useradd --system loki

References

• How to setup Loki in Ubuntu 20.04