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 }}
      helm-chart-name:
        description: Helm chart OCI name
        value: ${{ jobs.helm-chart.outputs.name }}
      helm-chart-tag:
        description: Helm chart tag
        value: ${{ jobs.helm-chart.outputs.tag }}
      helm-chart-package:
        description: Helm chart package name
        value: ${{ jobs.helm-chart.outputs.package }}

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@29109295f81e9208d7d86ff1c6c12d2833863392 # v3.6.0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@b5ca514318bd6ebac0fb2aedd5d36ec1b5c232a2 # v3.10.0

      - name: Set up Cosign
        uses: sigstore/cosign-installer@d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a # v3.8.1

      - 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@902fa8ec7d6ecbf8d84d538b9b233a880e428804 # v5.7.0
        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/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        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@471d1dc4e07e5cdedd4c2171150001c434f0b7a4 # v6.15.0
        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@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        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@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: "[${{ github.job }}] Docker tarball"
          path: docker.tar

      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@6c175e9c4083a92bbca2f9724c8a5e33bc2d97a5 # 0.30.0
        with:
          input: image
          format: sarif
          output: trivy-results.sarif

      - name: Upload Trivy scan results as artifact
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        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@5f8171a638ada777af81d42b55959a643bb29017 # v3.28.12
        with:
          sarif_file: trivy-results.sarif

  helm-chart:
    name: Helm chart
    runs-on: ubuntu-latest

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

    outputs:
      name: ${{ steps.oci-chart-name.outputs.value }}
      tag: ${{ steps.version.outputs.value }}
      package: ${{ steps.build.outputs.package }}

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

      - name: Set up Helm
        uses: azure/setup-helm@b9e51907a09c216f16ebe8536097933489208112 # v4.3.0
        with:
          version: v3.12.0

      - name: Set up Cosign
        uses: sigstore/cosign-installer@d7d6bc7722e3daa8354c50bcb52f4837da5e9b6a # v3.8.1

      - name: Set chart name
        id: chart-name
        run: echo "value=${{ github.event.repository.name }}" >> "$GITHUB_OUTPUT"

      - name: Set OCI registry name
        id: oci-registry-name
        run: echo "value=ghcr.io/${{ github.repository_owner }}/helm-charts" >> "$GITHUB_OUTPUT"

      - name: Set OCI chart name
        id: oci-chart-name
        run: echo "value=${{ steps.oci-registry-name.outputs.value }}/${{ steps.chart-name.outputs.value }}" >> "$GITHUB_OUTPUT"

      - name: Helm lint
        run: helm lint deploy/charts/${{ steps.chart-name.outputs.value }}

      - name: Determine raw version
        uses: haya14busa/action-cond@94f77f7a80cd666cb3155084e428254fea4281fd # v1.2.1
        id: raw-version
        with:
          cond: ${{ inputs.release }}
          if_true: ${{ github.ref_name }}
          if_false: v0.0.0

      - name: Determine version
        id: version
        run: |
          VERSION=${{ steps.raw-version.outputs.value }}
          echo "value=${VERSION#v}" >> "$GITHUB_OUTPUT"

      - name: Helm package
        id: build
        run: |
          helm package deploy/charts/${{ steps.chart-name.outputs.value }} --version ${{ steps.version.outputs.value }} --app-version ${{ steps.raw-version.outputs.value }}
          echo "package=${{ steps.chart-name.outputs.value }}-${{ steps.version.outputs.value }}.tgz" >> "$GITHUB_OUTPUT"

      - name: Upload chart as artifact
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: "[${{ github.job }}] Helm chart"
          path: ${{ steps.build.outputs.package }}

      - name: Login to GitHub Container Registry
        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3.4.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ github.token }}
        if: inputs.publish && inputs.release

      - name: Helm push
        id: push
        run: |
          helm push ${{ steps.build.outputs.package }} oci://${{ steps.oci-registry-name.outputs.value }} &> push-metadata.txt
          echo "digest=$(awk '/Digest: /{print $2}' push-metadata.txt)" >> "$GITHUB_OUTPUT"
        env:
          HELM_REGISTRY_CONFIG: ~/.docker/config.json
        if: inputs.publish && inputs.release

      - name: Sign chart with GitHub OIDC Token
        if: ${{ inputs.publish && inputs.release && github.repository_owner == 'bank-vaults' }} # Check if the workflow is called by the same GitHub organization
        env:
          DIGEST: ${{ steps.push.outputs.digest }}
        run: cosign sign --yes --rekor-url "https://rekor.sigstore.dev/" "${{ steps.oci-chart-name.outputs.value }}@${DIGEST}"

      - name: Verify signed chart with cosign
        if: ${{ inputs.publish && inputs.release && github.repository_owner == 'bank-vaults' }} # Check if the workflow is called by the same GitHub organization
        env:
          DIGEST: ${{ steps.push.outputs.digest }}
        run: |
          cosign verify "${{ steps.oci-chart-name.outputs.value }}@${DIGEST}" \
            --rekor-url "https://rekor.sigstore.dev/" \
            --certificate-identity "https://github.com/${{ github.repository }}/.github/workflows/artifacts.yaml@${{ github.ref }}" \
            --certificate-oidc-issuer "https://token.actions.githubusercontent.com" | jq

      - name: Upload package as artifact
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: "[${{ github.job }}] package"
          path: ${{ steps.build.outputs.package }}

      - name: Run Trivy vulnerability scanner
        uses: aquasecurity/trivy-action@6c175e9c4083a92bbca2f9724c8a5e33bc2d97a5 # 0.30.0
        with:
          scan-type: config
          scan-ref: deploy/charts/${{ steps.chart-name.outputs.value }}
          format: sarif
          output: trivy-results.sarif

      - name: Upload Trivy scan results as artifact
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        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@5f8171a638ada777af81d42b55959a643bb29017 # v3.28.12
        with:
          sarif_file: trivy-results.sarif