computer-playbook/roles/docker-mailu/vars/main.yml

docker_compose_instance_directory: "{{path_docker_compose_instances}}mailu/"
database_instance:  	"mailu"
database_host:      	"database"
database_databasename:  "{{database_instance}}"
database_username:  	"{{database_instance}}"
database_password:  	"{{mailu_database_password}}"