services:
  builder:
    build: .
    working_dir: /workspace
    init: true

    volumes:
      - .:/workspace
      - nix-store:/nix

    command: >
      bash -lc '
        set -euo pipefail
        rm -rf build
        mkdir -p build
        OUT=$$(nix build . --print-out-paths)
        echo "Build output: $$OUT"
        rsync -a --chmod=ugo=rwX --no-owner --no-group "$$OUT"/ build/
      '

volumes:
  nix-store: