Copier template for the root of a project. With layout: parts it ships a docker-compose.yml that includes every part, a Makefile that drives compose and delegates fmt, check and build to parts, and an .env.example whose COMPOSE_FILE adds each part's docker-compose.local.yml. With layout: single a part template renders straight into the root and infra ships only .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 picked through COMPOSE_FILE in the root .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 layout=parts -d 'parts=["backend","frontend"]' <this-repo> <dest>
copier update -a .copier/infra.yml