this config value is generated from env var LDAP_DOMAIN automatically, but the default value in Dockerfile is used because it is specified in the Dockerfile ( also affects LDAP_GROUPSDN, LDAP_USERSDN, LDAP_USERSGROUPSBASEDN and LDAP_SAMBADOMAINNAME )
The value was not always generated, so the variable seems to have remained in the Dockerfile. I will be happy to adjust this with one of the next versions.
this config value is generated from env var LDAP_DOMAIN automatically, but the default value in Dockerfile is used because it is specified in the Dockerfile ( also affects LDAP_GROUPSDN, LDAP_USERSDN, LDAP_USERSGROUPSBASEDN and LDAP_SAMBADOMAINNAME )