build-images-release.yaml

name: Image Release Build

# Any change in triggers needs to be reflected in the concurrency group.
on:
  push:
    branches:
      - main
    tags:
      - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
  pull_request:
    branches:
      - main
      - v*

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.event.after }}
  cancel-in-progress: true

permissions: read-all

jobs:
  determine-deployment:
    if: ${{ github.repository == 'cilium/hubble' }}
    name: Determine Deployment
    runs-on: ubuntu-24.04
    steps:
      - name: Determine deployment environment
        id: environment
        # use 'release' deployment if the workflow was triggered on a pushed tag starting with "v"
        run: |
          echo "deployment=${{ (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')) && 'release' || '' }}" >> $GITHUB_OUTPUT
    outputs:
      name: ${{ steps.environment.outputs.deployment }}

  build-and-push:
    if: ${{ github.repository == 'cilium/hubble' }}
    environment: ${{ needs.determine-deployment.outputs.name }}
    runs-on: ubuntu-24.04
    needs: determine-deployment
    strategy:
      # matrix for easier code-sharing with workflows from cilium/cilium
      matrix:
        include:
          - name: hubble
            dockerfile: ./Dockerfile

    steps:
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3.7.1

      - name: Login to quay.io
        if: ${{ needs.determine-deployment.outputs.name == 'release' }}
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
        with:
          registry: quay.io
          username: ${{ secrets.QUAY_USERNAME_RELEASE_USERNAME }}
          password: ${{ secrets.QUAY_PASSWORD_RELEASE_PASSWORD }}

      - name: Getting image tag
        id: tag
        run: |
          echo "tag=${GITHUB_REF##*/}" >> $GITHUB_OUTPUT

      - name: Checkout Source Code
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          persist-credentials: false

      - name: Release Build ${{ matrix.name }}
        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
        id: docker_build_release
        with:
          context: .
          file: ${{ matrix.dockerfile }}
          push: ${{ needs.determine-deployment.outputs.name == 'release' }}
          platforms: linux/amd64,linux/arm64
          tags: |
            quay.io/${{ github.repository_owner }}/${{ matrix.name }}:${{ steps.tag.outputs.tag }}

      - name: Image Release Digest
        shell: bash
        run: |
          mkdir -p image-digest/
          job_name=${{ matrix.name }}
          job_name_capital=${job_name^^}
          job_name_underscored=${job_name_capital//-/_}
          echo "${job_name_underscored}_DIGEST := \"${{ steps.docker_build_release.outputs.digest }}\"" > image-digest/makefile-digest.txt

          echo "### ${{ matrix.name }}" > image-digest/${{ matrix.name }}.txt
          echo "" >> image-digest/${{ matrix.name }}.txt
          echo "\`quay.io/${{ github.repository_owner }}/${{ matrix.name }}:${{ steps.tag.outputs.tag }}@${{ steps.docker_build_release.outputs.digest }}\`" >> image-digest/${{ matrix.name }}.txt
          echo "" >> image-digest/${{ matrix.name }}.txt

      # Upload artifact digests
      - name: Upload artifact digests
        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
        with:
          name: image-digest ${{ matrix.name }}
          path: image-digest
          retention-days: 1

  image-digests:
    if: ${{ github.repository == 'cilium/hubble' }}
    name: Display Digests
    runs-on: ubuntu-24.04
    needs: build-and-push
    steps:
      - name: Getting image tag
        id: tag
        run: |
          echo "tag=${GITHUB_REF##*/}" >> $GITHUB_OUTPUT
      - name: Downloading Image Digests
        shell: bash
        run: |
          mkdir -p image-digest/

      - name: Download digests of all images built
        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
        with:
          pattern: "*image-digest *"
          path: image-digest/

      - name: Image Digests Output
        shell: bash
        run: |
          cd image-digest/
          echo "## Docker Manifests" > ../image-digest-output.txt
          echo "" >> ../image-digest-output.txt
          find -type f -not -name "makefile-digest.txt" | sort | xargs -d '\n' cat >> ../image-digest-output.txt

      - name: Image Makefile Digests
        shell: bash
        run: |
          cd image-digest/
          echo "# File generated by .github/workflows/build-images-releases.yaml; DO NOT EDIT." > ../Makefile.digests
          echo "# Copyright "$(date +'%Y')" Authors of Cilium" >> ../Makefile.digests
          echo "# SPDX-License-Identifier: Apache-2.0" >> ../Makefile.digests
          echo "" >> ../Makefile.digests
          find -type f  -name "makefile-digest.txt" | sort | xargs -d '\n' cat >> ../Makefile.digests

      # Upload artifact digests
      - name: Upload artifact digests
        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
        with:
          name: image-digest-output.txt-${{ steps.tag.outputs.tag }}
          path: image-digest-output.txt
          retention-days: 1

      # Upload artifact digests
      - name: Upload artifact digests
        uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
        with:
          name: Makefile.digests-${{ steps.tag.outputs.tag }}
          path: Makefile.digests
          retention-days: 1