Copier template for the root of a project: docker-compose.yml that includes every part, a Makefile that drives compose and delegates fmt, check and build to parts, .env.example, .gitignore, CLAUDE.md and pre-commit hooks.

A part is a directory with:

docker-compose.yml with root-relative paths, plus docker-compose.local.yml and docker-compose.prod.yml selected by COMPOSE_ENV
Makefile with fmt, check and build targets
.env.example appended to the root .env by make env
CLAUDE.md with the part's checking commands

Application services carry the services profile, databases and other infrastructure carry external.

copier copy --trust -d 'parts=["backend","frontend"]' <this-repo> <dest>
copier update -a .copier-answers.infra.yml