Newer versions of Gitea need a JWT secret for Oauth2. Gitea will
attempt to generate one at startup if it is not already specified in the
configuration file, but this will fail since the file is not writable by
the user running the service. As such, it must be set via configuration
policy.
The host *zbx0.pyrocufflink.blue* (a Raspberry Pi) runs the Zabbix
server and web UI. It has a reserved IPv4 address to simplify reverse
DNS management for now, since Samba's dynamic DNS client does not
register PTR records.