release-lambda.yml

name: Attach Asset to Release

on:
  push:
    tags:
      - 'v*'

jobs:
  build-and-upload:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        architecture: [amd64, arm64]
    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Build Docker Image and Create Lambda Layer
        run: |
          docker buildx build --platform linux/${{ matrix.architecture }} \
            -t lambda-layer-builder:${{ matrix.architecture }} \
            --output type=docker \
            -f Dockerfile .
          docker create --name layer_builder lambda-layer-builder:${{ matrix.architecture }}
          docker cp layer_builder:/tmp/layer.zip layer-${{ matrix.architecture }}.zip
          unzip -l layer-${{ matrix.architecture }}.zip | grep -i cffi

      - name: Get Release
        id: get_release
        uses: actions/github-script@v6
        with:
          github-token: ${{secrets.GITHUB_TOKEN}}
          script: |
            const release = await github.rest.repos.getReleaseByTag({
              owner: context.repo.owner,
              repo: context.repo.repo,
              tag: context.ref.replace('refs/tags/', '')
            });
            core.setOutput('upload_url', release.data.upload_url);

      - name: Upload Release Asset
        uses: actions/upload-release-asset@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          upload_url: ${{ steps.get_release.outputs.upload_url }}
          asset_path: ./layer-${{ matrix.architecture }}.zip
          asset_name: layer-${{ github.ref_name }}-${{ matrix.architecture }}.zip
          asset_content_type: application/zip