artifacts.yaml

name: Artifacts

on:
  workflow_call:
    inputs:
      publish:
        description: Publish artifacts to the artifact store
        default: false
        required: false
        type: boolean
      release:
        description: Whether this is a release build
        default: false
        required: false
        type: boolean
    outputs:
      container-image-name:
        description: Container image name
        value: ${{ jobs.container-image.outputs.name }}
      container-image-digest:
        description: Container image digest
        value: ${{ jobs.container-image.outputs.digest }}
      container-image-tag:
        description: Container image tag
        value: ${{ jobs.container-image.outputs.tag }}
      container-image-ref:
        description: Container image ref
        value: ${{ jobs.container-image.outputs.ref }}

permissions:
  contents: read

jobs:
  container-image:
    name: Container image
    runs-on: ubuntu-latest

    permissions:
      contents: read
      packages: write
      id-token: write
      security-events: write

    outputs:
      name: ${{ steps.image-name.outputs.value }}
      digest: ${{ steps.build.outputs.digest }}
      tag: ${{ steps.meta.outputs.version }}
      ref: ${{ steps.image-ref.outputs.value }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Set up QEMU
        uses: docker/setup-qemu-action@53851d14592bedcffcf25ea515637cff71ef929a # v3.3.0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@6524bf65af31da8d45b59e8c27de4bd072b392f5 # v3.8.0

      - name: Set up Cosign
        uses: sigstore/cosign-installer@dc72c7d5c4d10cd6bcb8cf6e3fd625a9e5e537da # v3.7.0

      - name: Set image name
        id: image-name
        run: echo "value=ghcr.io/${{ github.repository }}" >> "$GITHUB_OUTPUT"

      - name: Gather build metadata
        id: meta
        uses: docker/metadata-action@369eb591f429131d6889c46b94e711f089e6ca96 # v5.6.1
        with:
          images: ${{ steps.image-name.outputs.value }}
          flavor: |
            latest = false
          tags: |
            type=ref,event=branch
            type=ref,event=pr,prefix=pr-
            type=semver,pattern={{raw}}
            type=raw,value=latest,enable={{is_default_branch}}

      # Multiple exporters are not supported yet
      # See https://github.com/moby/buildkit/pull/2760
      - name: Determine build output
        uses: haya14busa/action-cond@94f77f7a80cd666cb3155084e428254fea4281fd # v1.2.1
        id: build-output
        with:
          cond: ${{ inputs.publish }}
          if_true: type=image,push=true
          if_false: type=oci,dest=image.tar

      - name: Login to GitHub Container Registry
        uses: docker/#-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
        if: inputs.publish

      - name: Build and push image
        id: build
        uses: docker/build-push-action@67a2d409c0a876cbe6b11854e3e25193efe4e62d # v6.12.0
        with:
          context: .
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          outputs: ${{ steps.build-output.outputs.value }}
          # push: ${{ inputs.publish }}

      - name: Sign image with GitHub OIDC Token
        if: ${{ inputs.publish && github.repository_owner == 'bank-vaults' }} # Check if the workflow is called by the same GitHub organization
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
          TAGS: ${{ steps.meta.outputs.tags }}
        run: |
          images=""
          for tag in ${TAGS[@]}; do
            images+="${tag}@${DIGEST} "
          done

          cosign sign --yes --rekor-url "https://rekor.sigstore.dev/" ${images}

      - name: Verify signed image with cosign
        if: ${{ inputs.publish && github.repository_owner == 'bank-vaults' }} # Check if the workflow is called by the same GitHub organization
        env:
          DIGEST: ${{ steps.build.outputs.digest }}
          TAGS: ${{ steps.meta.outputs.tags }}
        run: |
          for tag in ${TAGS[@]}; do
            cosign verify "${tag}@${DIGEST}" \
              --rekor-url "https://rekor.sigstore.dev/" \
              --certificate-identity "https://github.com/${{ github.repository }}/.github/workflows/artifacts.yaml@${{ github.ref }}" \
              --certificate-oidc-issuer "https://token.actions.githubusercontent.com" | jq
          done

      - name: Set image ref
        id: image-ref
        run: echo "value=${{ steps.image-name.outputs.value }}@${{ steps.build.outputs.digest }}" >> "$GITHUB_OUTPUT"

      - name: Fetch image
        run: skopeo --insecure-policy copy docker://${{ steps.image-name.outputs.value }}:${{ steps.meta.outputs.version }} oci-archive:image.tar
        if: inputs.publish

      - name: Upload image as artifact
        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
        with:
          name: "[${{ github.job }}] OCI tarball"
          path: image.tar

      - name: Extract OCI tarball
        run: |
          mkdir -p image
          tar -xf image.tar -C image

      # See https://github.com/anchore/syft/issues/1545
      - name: Extract image from multi-arch image
        run: skopeo --override-os linux --override-arch amd64 --insecure-policy copy --additional-tag ${{ steps.image-name.outputs.value }}:${{ steps.meta.outputs.version }} oci:image docker-archive:docker.tar

      - name: Upload image as artifact
        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
        with:
          name: "[${{ github.job }}] Docker tarball"
          path: docker.tar

      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@18f2510ee396bbf400402947b394f2dd8c87dbb0 # 0.29.0
        with:
          input: image
          format: sarif
          output: trivy-results.sarif

      - name: Upload Trivy scan results as artifact
        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
        with:
          name: "[${{ github.job }}] Trivy scan results"
          path: trivy-results.sarif
          retention-days: 5

      - name: Upload Trivy scan results to GitHub Security tab
        uses: github/codeql-action/upload-sarif@b6a472f63d85b9c78a3ac5e89422239fc15e9b3c # v3.28.1
        with:
          sarif_file: trivy-results.sarif

  binary:
    name: Binary
    runs-on: ubuntu-latest

    permissions:
      contents: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Set up Nix
        uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # v27
        with:
          extra_nix_config: |
            access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}

      - name: Prepare Nix shell
        run: nix develop --impure .#ci

      - name: Determine build command
        uses: haya14busa/action-cond@94f77f7a80cd666cb3155084e428254fea4281fd # v1.2.1
        id: build-command
        with:
          cond: ${{ inputs.release }}
          if_true: goreleaser release
          if_false: goreleaser release --skip=publish --snapshot

      - name: Build
        run: nix develop --impure .#ci -c ${{ steps.build-command.outputs.value }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Upload artifacts
        uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
        with:
          name: "${{ github.job }}"
          path: |
            build/dist/*.tar.gz
            build/dist/checksums.txt