kured/.github/workflows/on-main-push.yaml

# We publish every merged commit in the form of an image
# named kured:<branch>-<short tag>
name: Push image of latest main
on:
  push:
    branches:
      - main

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  tag-scan-and-push-final-image:
    name: "Build, scan, and publish tagged image"
    runs-on: ubuntu-latest
    permissions:
      id-token: write
      contents: write
      packages: write
    steps:
      - uses: actions/checkout@v3

      - name: Ensure go version
        uses: actions/setup-go@v4
        with:
          go-version-file: 'go.mod'
          check-latest: true

      - name: Login to ghcr.io
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@c4ee3adeed93b1fa6a762f209fb01608c1a22f1e
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Find current tag version
        run: echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
        id: tags

      - name: Setup GoReleaser
        run: make bootstrap-tools

      - name: Build binaries
        run: make kured-release-snapshot
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          COSIGN_EXPERIMENTAL: 1

      - name: Build image
        uses: docker/build-push-action@v4
        with:
          context: .
          platforms: linux/arm64, linux/amd64, linux/arm/v7, linux/arm/v6, linux/386
          push: true
          labels: ${{ steps.meta.outputs.labels }}
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tags.outputs.sha_short }}

      - name: Generate SBOM
        run: |
          .tmp/syft ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tags.outputs.sha_short }} -o spdx > kured.sbom

      - name: Sign and attest artifacts
        run: |
          .tmp/cosign sign -f -r ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tags.outputs.sha_short }}

          .tmp/cosign sign-blob --output-signature kured.sbom.sig --output-certificate kured.sbom.pem kured.sbom

          .tmp/cosign attest -f --type spdx --predicate kured.sbom ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tags.outputs.sha_short }}
          .tmp/cosign attach sbom --type spdx --sbom kured.sbom ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tags.outputs.sha_short }}
        env:
          COSIGN_EXPERIMENTAL: 1