It works with disabled strong authentication so the container shouldn’t be the problem.
Just to clarify:
Your GLPI runs on a separate machine?
Did you install the GLPI module or a newer version?
I installed newest glpi 9.4.5 as described in HowTo install GLPI 9.4.4 on NethServer 7.7
Here are my working GLPI settings:
When creating the LDAP directory I clicked on Active Directory settings, this sets a more complex connection filter to hide deactivated users.
Here are the commands to copy a valid certificate to the samba container:
\cp /etc/pki/tls/private/localhost.key /var/lib/machines/nsdc/var/lib/samba/private/tls/key.pem
\cp /etc/pki/tls/certs/localhost.crt /var/lib/machines/nsdc/var/lib/samba/private/tls/cert.pem
chmod 600 /var/lib/machines/nsdc/var/lib/samba/private/tls/key.pem
chmod 644 /var/lib/machines/nsdc/var/lib/samba/private/tls/cert.pem
You need to restart samba in the container to apply the cert:
systemctl -M nsdc restart samba