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

docker_compose_project_name:        "gitlab"
docker_compose_instance_directory: "{{path_docker_compose_instances}}{{docker_compose_project_name}}/"
database_host:                      "database"
database_databasename:              "{{docker_compose_project_name}}"
database_username:                  "{{docker_compose_project_name}}"
database_password:                  "{{gitlab_database_password}}"
database_version:                   "{{ gitlab_database_version | default(postgres_default_version) }}"