This is a simple setup to replicate tardis' LDAP setup on your local machine using docker.
It's just osixia/openldap with some extra schemas (bootstrap/schema/*) and some pre-population (bootstrap/ldif/*).
You should just be able to run docker-compose up if you have it installed. By default, the LDAP server is available at ldap://localhost:389.
The included shell.nix will install docker-compose alongside some ldap tools for convenience.