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, a README.md and an .env.example whose COMPOSE_FILE adds each part's docker-compose.override.yml and whose COMPOSE_PROFILES selects what runs on the machine. 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 and a profile per service, plus docker-compose.override.yml.example for what differs between machines
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