py-cookiecutter-templates/docker-compose/cookiecutter.json

{
    "project_slug": "dir-name",
    "__project_slug": "{{ cookiecutter.project_slug.lower().replace(' ', '_').replace('-', '_') }}",
    "service": "{{ cookiecutter.__project_slug }}",
    "__service_slug": "{{ cookiecutter.service.lower().replace(' ', '_').replace('-', '_') }}",
    "component_list": "{{ cookiecutter.__service_slug }}",
    "__component_list_slug": "{{ cookiecutter.component_list.lower().replace(' ', '_').replace('-', '_') }}",
    "context": "ctx",
    "__context_slug": "{{ cookiecutter.context.lower().replace(' ', '_').replace('-', '_') }}"
}