name: Build ISO

# Full ISO build is ~15-20 min. Only run on push-to-main and manual
# dispatch so feature-branch iteration stays fast. See
# memory/project_ci_branching for the rationale.
on:
  push:
    branches: [main]
  workflow_dispatch:

concurrency:
  group: build-iso-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build-iso:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    env:
      # forgejo-runner's DinD sidecar is reachable over TCP on the
      # `forgejo-runner_default` docker network. The default runner image
      # for `ubuntu-latest` doesn't propagate the runner's docker_host
      # config into the job env, so we pin it explicitly here.
      DOCKER_HOST: tcp://docker-in-docker:2375
    steps:
      - uses: actions/checkout@v4

      - name: Install docker CLI
        run: |
          apt-get update -qq
          apt-get install -y --no-install-recommends docker.io

      - name: Build ISO
        run: ./iso/build.sh

      - name: Report ISO hash
        run: |
          iso=$(ls iso/out/*.iso | head -1)
          echo "ISO: $iso"
          sha256sum "$iso"

      - name: Upload ISO artifact
        uses: actions/upload-artifact@v4
        with:
          name: furtka-iso
          path: iso/out/*.iso
          retention-days: 14
          if-no-files-found: error