Migrating config and database directory to the docker version of openldap

[Adam-PP]

Hi,
I would like to ask you about the option to migrate the config and database of ldap v1.3.6 installed as a service running on VM to the version 1.5.0 launched as a Docker service.
I wanted to attach the config and database directory to the Docker version of openldap using volumes.
Service is starting and running but the database is empty - it acts like nothing was mapped in volume.
Do you know what might be a reason of it? All I have configured in docker-compose file for openldap service is admin username and it's password.
Thanks in advance for all tips and hints