Using Docker containers you can easily create an OpenLDAP instance by using official images available from the Docker repository:
docker run -p 389:389 -p 636:636 --name myOpenLDAP --env LDAP_ORGANISATION="My OpenLDAP" --env LDAP_DOMAIN="my.directory" --env LDAP_ADMIN_PASSWORD="admin" --detach osixia/openldap:1.3.0