docker-compose.yml

# ─────────────────────────────────────────────────────────────────────────────
# SimpleSLAM — development & CI compose workflow.
#
# The image carries the C++20 toolchain + every dependency; your working tree is
# bind-mounted and the CMake build dir lives in a named volume, so rebuilds are
# fast and incremental without rebuilding the image.
#
#   docker compose build                       # build the dev image once
#   docker compose up -d dev                   # start a long-lived dev container
#   docker compose exec dev bash               # shell in; edit on host, build here
#   docker compose run --rm test               # one-shot configure + build + ctest
# ─────────────────────────────────────────────────────────────────────────────

services:
  # Long-lived development container. Edit on the host, compile inside.
  dev:
    build:
      context: .
      dockerfile: Dockerfile
      target: dev
    image: simpleslam-dev:latest
    working_dir: /workspace
    volumes:
      - .:/workspace                       # live source (host <-> container)
      - simpleslam-build:/workspace/build  # persistent, fast incremental builds
    command: ["sleep", "infinity"]

  # One-shot build + test runner. `--profile test` keeps it from auto-starting.
  test:
    profiles: ["test"]
    image: simpleslam-dev:latest
    build:
      context: .
      dockerfile: Dockerfile
      target: dev
    working_dir: /workspace
    volumes:
      - .:/workspace
      - simpleslam-build:/workspace/build
    # $$ escapes compose interpolation so bash receives a literal $(nproc).
    command:
      - bash
      - -c
      - >-
        cmake -B build -DBUILD_TESTING=ON &&
        cmake --build build -j"$$(nproc)" &&
        ctest --test-dir build --output-on-failure

volumes:
  simpleslam-build: