build.yml

---
name: Build
on:
  push: {}
  schedule:
    - cron: '00 02 1 * *'
  workflow_dispatch: {}

jobs:
  builds:
    name: WSL2 build
    runs-on: ubuntu-latest
    timeout-minutes: 30
    permissions:
      contents: write
      packages: write
    env:
      COMMIT_SHORT_SHA: null

    steps:
      - name: Checkout from repository
        uses: actions/checkout@v4.1.7

      - name: Set short git commit SHA
        run: |+
          set -eux

          calculatedSha=$(git rev-parse --short ${{ github.sha }})
          echo "COMMIT_SHORT_SHA=$calculatedSha" >> $GITHUB_ENV

      - uses: docker/metadata-action@v5
        id: meta
        with:
          images: ghcr.io/naa0yama/devtool-wsl2
          flavor: |
            latest=false
          tags: |
            type=ref,event=tag,prefix=,enable=true

            # minimal (short sha)
            type=sha,enable=true,prefix=,format=short

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v6.5.0
        with:
          context: .
          file: Dockerfile
          push: true
          cache-from: type=gha
          cache-to: type=gha,mode=max
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Pull and save a WSL2 Docker image
        run: |
          set -eux

          docker images
          docker export ${{ steps.meta.outputs.tags }} | gzip > ./tarball-${{ env.COMMIT_SHORT_SHA }}.tar.gz

      - name: Cleanup pre-releases
        uses: actions/github-script@v7.0.1
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |+
            const __prereleases = await github.rest.repos.listReleases({
              owner: context.repo.owner,
              repo: context.repo.repo,
              per_page: 100,
            });
            const prereleases = __prereleases.data

            for (const index in prereleases) {
              if (prereleases[index].draft == true &&
                  prereleases[index].prerelease == true ) {
                console.log('delte pre-release ' + prereleases[index]['id'] + '\t' + prereleases[index]['name'])

                await github.rest.repos.deleteRelease({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  release_id: prereleases[index]['id'],
                });
              }
            }

            console.log('end run')

      - name: Pre-Release
        uses: softprops/action-gh-release@v2
        with:
          name: WSL2 image ${{ env.COMMIT_SHORT_SHA }}
          tag_name: ${{ env.COMMIT_SHORT_SHA }}
          generate_release_notes: true
          draft: true
          prerelease: true
          files: |
            ./tarball-${{ env.COMMIT_SHORT_SHA }}.tar.gz