build.yml

name: build-ublue
on:
  pull_request:
  merge_group:
  schedule:
    - cron: '0 14 * * *'  # 2pm UTC everyday (timed against official fedora container pushes, and after 'config')
  workflow_dispatch:
env:
    IMAGE_NAME: akmods
    IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}

jobs:
  push-ghcr:
    name: akmods
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      packages: write
      id-token: write
    strategy:
      fail-fast: false
      matrix:
        kernel_flavor: [main, asus, 6.7.9-204.fsync, surface]
        cfile_suffix: [common, nvidia]
        major_version: [38, 39]
        nvidia_version: [0, 470, 550]
        exclude:
          - cfile_suffix: common
            nvidia_version: 470
          - cfile_suffix: common
            nvidia_version: 550
          - cfile_suffix: nvidia
            nvidia_version: 0
          - kernel_flavor: fsync
            major_version: 38
          - kernel_flavor: surface
            nvidia_version: 470
    steps:
      # Checkout push-to-registry action GitHub repository
      - name: Checkout Push to Registry action
        uses: actions/checkout@v4

      - name: Matrix Variables
        shell: bash
        run: |
          if [[ "${{ matrix.major_version }}" -ge "40" ]]; then
              echo "SOURCE_IMAGE=fedora-silverblue" >> $GITHUB_ENV
              echo "SOURCE_ORG=fedora" >> $GITHUB_ENV
          else
              echo "SOURCE_IMAGE=base" >> $GITHUB_ENV
              echo "SOURCE_ORG=fedora-ostree-desktops" >> $GITHUB_ENV
          fi

      - name: Generate tags
        id: generate-tags
        shell: bash
        run: |
          # Generate a timestamp for creating an image version history
          TIMESTAMP="$(date +%Y%m%d)"
          if [[ "${{ matrix.cfile_suffix }}" == "nvidia" ]]; then
              VARIANT="${{ matrix.kernel_flavor }}-${{ matrix.major_version }}-${{ matrix.nvidia_version }}"
          else
              VARIANT="${{ matrix.kernel_flavor }}-${{ matrix.major_version }}"
          fi

          COMMIT_TAGS=()
          BUILD_TAGS=()

          # Have tags for tracking builds during pull request
          SHA_SHORT="${GITHUB_SHA::7}"
          COMMIT_TAGS+=("pr-${{ github.event.number }}-${VARIANT}")
          COMMIT_TAGS+=("${SHA_SHORT}-${VARIANT}")

          BUILD_TAGS=("${VARIANT}" "${VARIANT}-${TIMESTAMP}")

          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
              echo "Generated the following commit tags: "
              for TAG in "${COMMIT_TAGS[@]}"; do
                  echo "${TAG}"
              done

              alias_tags=("${COMMIT_TAGS[@]}")
          else
              alias_tags=("${BUILD_TAGS[@]}")
          fi

          echo "Generated the following build tags: "
          for TAG in "${BUILD_TAGS[@]}"; do
              echo "${TAG}"
          done

          echo "alias_tags=${alias_tags[*]}" >> $GITHUB_OUTPUT

      - name: Retrieve akmods signing key
        run: |
          mkdir -p certs
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
              echo "Using test signing key"
          else
              echo "${{ secrets.AKMOD_PRIVKEY_20230518 }}" > certs/private_key.priv
          fi
          # DEBUG: get character count of key
          wc -c certs/private_key.priv

      - name: Get current version
        id: labels
        uses: Wandalen/wretry.action@v1.4.4
        with:
          attempt_limit: 3
          attempt_delay: 15000
          command: |
            set -eo pipefail
            skopeo inspect docker://quay.io/${{ env.SOURCE_ORG }}/${{ env.SOURCE_IMAGE }}:${{ matrix.major_version }} > inspect.json
            ver=$(jq -r '.Labels["org.opencontainers.image.version"]' inspect.json)
            linux=$(jq -r '.Labels["ostree.linux"]' inspect.json)
            if [ -z "$ver" ] || [ "null" = "$ver" ]; then
              echo "inspected image version must not be empty or null"
              exit 1
            fi
            if [ -z "$linux" ] || [ "null" = "$linux" ]; then
              echo "inspected image linux version must not be empty or null"
              exit 1
            fi
            echo "VERSION=$ver" >> $GITHUB_OUTPUT
            echo "LINUX=$linux" >> $GITHUB_OUTPUT

      # Build metadata
      - name: Image Metadata
        uses: docker/metadata-action@v5
        id: meta
        with:
          images: |
            ${{ 'nvidia' == matrix.cfile_suffix && format('{0}-nvidia', env.IMAGE_NAME) || format('{0}', env.IMAGE_NAME) }}
          labels: |
            org.opencontainers.image.title=${{ env.IMAGE_NAME }}
            org.opencontainers.image.description=A caching layer for pre-built akmod RPMs
            org.opencontainers.image.version=${{ steps.labels.outputs.VERSION }}
            ostree.linux=${{ steps.labels.outputs.LINUX }}
            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository }}/main/README.md
            io.artifacthub.package.logo-url=https://avatars.githubusercontent.com/u/1728152?s=200&v=4

      - name: Pull build image
        uses: Wandalen/wretry.action@v1.4.4
        with:
          attempt_limit: 3
          attempt_delay: 15000
          command: |
            # pull the base image used for FROM in containerfile so
            # we can retry on that unfortunately common failure case
            podman pull quay.io/${{ env.SOURCE_ORG }}/${{ env.SOURCE_IMAGE }}:${{ matrix.major_version }}

      # Build image using Buildah action
      - name: Build Image
        id: build_image
        uses: redhat-actions/buildah-build@v2
        with:
          containerfiles: |
            ./Containerfile.${{ matrix.cfile_suffix }}
          image: ${{ 'nvidia' == matrix.cfile_suffix && format('{0}-nvidia', env.IMAGE_NAME) || format('{0}', env.IMAGE_NAME) }}
          tags: |
            ${{ steps.generate-tags.outputs.alias_tags }}
          build-args: |
            SOURCE_IMAGE=${{ env.SOURCE_IMAGE }}
            SOURCE_ORG=${{ env.SOURCE_ORG }}
            KERNEL_FLAVOR=${{ matrix.kernel_flavor }}
            FEDORA_MAJOR_VERSION=${{ matrix.major_version }}
            NVIDIA_MAJOR_VERSION=${{ matrix.nvidia_version }}
            RPMFUSION_MIRROR=${{ vars.RPMFUSION_MIRROR }}
          labels: ${{ steps.meta.outputs.labels }}
          oci: false

      # Workaround bug where capital letters in your GitHub username make it impossible to push to GHCR.
      # https://github.com/macbre/push-to-ghcr/issues/12
      - name: Lowercase Registry
        id: registry_case
        uses: ASzc/change-string-case-action@v6
        with:
          string: ${{ env.IMAGE_REGISTRY }}


      - name: Push To GHCR
        uses: Wandalen/wretry.action@v1.4.4
        id: push
        if: github.event_name != 'pull_request'
        env:
          REGISTRY_USER: ${{ github.actor }}
          REGISTRY_PASSWORD: ${{ github.token }}
        with:
          action: redhat-actions/push-to-registry@v2
          attempt_limit: 3
          attempt_delay: 15000
          with: |
            image: ${{ steps.build_image.outputs.image }}
            tags: ${{ steps.build_image.outputs.tags }}
            registry: ${{ steps.registry_case.outputs.lowercase }}
            username: ${{ env.REGISTRY_USER }}
            password: ${{ env.REGISTRY_PASSWORD }}
            extra-args: |
              --disable-content-trust

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        if: github.event_name != 'pull_request'
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Sign container
      - uses: sigstore/cosign-installer@v3.4.0
        if: github.event_name != 'pull_request'

      - name: Sign container image
        if: github.event_name != 'pull_request'
        run: |
          cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS}
        env:
          TAGS: ${{ steps.push.outputs.outputs && fromJSON(steps.push.outputs.outputs).digest }}
          COSIGN_EXPERIMENTAL: false
          COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}

      - name: Echo outputs
        if: github.event_name != 'pull_request'
        run: |
          echo "${{ toJSON(steps.push.outputs) }}"

  check:
    name: Check all builds successful
    runs-on: ubuntu-latest
    needs: [push-ghcr]
    steps:
      - name: Exit
        shell: bash
        run: exit 0