build.yml

---
name: Build container image
on:
  pull_request:
    branches: ['*']
  schedule:
    - cron: '05 10 * * *'  # 10:05am UTC everyday
  push:
    branches: ['*']
    paths-ignore:
      - '**/README.md'
      - 'releases.json'
  workflow_dispatch:

env:
  IMAGE_DESC: "Zena"
  IMAGE_NAME: "${{ github.event.repository.name }}"
  IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}"
  FEDORA_VERSION: "43"
  DEFAULT_TAG: "latest"

concurrency:
  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}-${{ inputs.brand_name}}-${{ inputs.stream_name }}
  cancel-in-progress: true

jobs:
  build_push:
    name: Build and push image

    strategy:
      fail-fast: false
      matrix:
        flavor: ["", "nvidia"]

    runs-on: ubuntu-24.04

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

    timeout-minutes: 30

    steps:
      - name: Change image name depending on build flavor
        env:
          BUILD_FLAVOR: ${{ matrix.flavor }}
        run: |
          if [ "${BUILD_FLAVOR}" != "" ] ; then
            echo "IMAGE_NAME=${IMAGE_NAME}-${{ matrix.flavor }}" >> $GITHUB_ENV
          fi

      - name: Lower case image variables
        run: |
          echo "IMAGE_REGISTRY=${IMAGE_REGISTRY,,}" >> ${GITHUB_ENV}
          echo "IMAGE_NAME=${IMAGE_NAME,,}" >> ${GITHUB_ENV}

      - name: Set tag prefix
        if: github.ref_name != 'main'
        run: |
          echo "TAG_PREFIX=${{ github.ref_name }}." >> $GITHUB_ENV

      - name: Checkout
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v6

      - name: Mount BTRFS for podman storage
        id: container-storage-action
        uses: ublue-os/container-storage-action@main
        continue-on-error: true
        with:
          target-dir: /var/lib/containers
          mount-opts: compress-force=zstd:2

      - name: Get current date
        id: date
        run: |
          echo "date=$(date -u +%Y\-%m\-%d\T%H\:%M\:%S\Z)" >> $GITHUB_OUTPUT

      - name: Image Metadata
        uses: docker/metadata-action@80c7e94dd9b9319bd5eb7a0e0fe9291e23a2a2e9 # v6.1.0
        id: metadata
        with:
          tags: |
            type=raw,value=${{ env.TAG_PREFIX }}{{date 'YYYYMMDD'}}
            type=raw,value=${{ env.TAG_PREFIX }}${{ env.DEFAULT_TAG }}
            type=raw,value=${{ env.TAG_PREFIX }}${{ env.FEDORA_VERSION }}
            type=raw,value=${{ env.TAG_PREFIX }}${{ env.FEDORA_VERSION }}.{{date 'YYYYMMDD'}}
            type=sha,enable=${{ github.event_name == 'pull_request' }}
            type=ref,event=pr
          labels: |
            org.opencontainers.image.created=${{ steps.date.outputs.date }}
            org.opencontainers.image.description=${{ env.IMAGE_DESC }}
            org.opencontainers.image.documentation=https://raw.githubusercontent.com/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}/${{ github.sha }}/README.md
            org.opencontainers.image.source=https://github.com/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}/blob/${{ github.sha }}/Containerfile
            org.opencontainers.image.title=${{ env.IMAGE_NAME }}
            org.opencontainers.image.url=https://github.com/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}/tree/${{ github.sha }}
            org.opencontainers.image.vendor=${{ github.repository_owner }}
            org.opencontainers.image.version=${{ env.FEDORA_VERSION }}.{{date 'YYYYMMDD'}}
            containers.bootc=1
          sep-tags: ' '
          sep-annotations: ' '


      - name: Check secure boot key
        id: secret-check
        run: |
          if [ -z "${{ secrets.SECUREBOOT_KEY }}" ]; then
            echo "present=false" >> $GITHUB_OUTPUT
          else
            echo "present=true" >> $GITHUB_OUTPUT
          fi

      - name: Decode Secure Boot keys
        if: steps.secret-check.outputs.present == 'true'
        run: |
          echo "$SECUREBOOT_KEY" | base64 --decode > system-files/common/secureboot/MOK.key
          chmod 600 system-files/common/secureboot/MOK.key
        env:
          SECUREBOOT_KEY: ${{ secrets.SECUREBOOT_KEY }}

      - name: Prepare build args file
        run: |
          cat <<'EOF' >>build_args.txt
          FEDORA_VERSION=${{ env.FEDORA_VERSION }}
          IMAGE=${{ env.IMAGE_NAME }}
          EOF

      - name: Build Image
        id: build_image
        run: |
          sudo -E buildah build \
            --file Containerfile \
            --build-arg-file build_args.txt \
            --tag raw-img .

      - name: Run Rechunker
        id: rechunk
        uses: ublue-os/legacy-rechunk@a925083d9af7cb04b3e2a6e8c01bfa495f38b710 # v1.0.0
        with:
          rechunk: 'ghcr.io/ublue-os/legacy-rechunk:v1.0.0-x86_64'
          ref: 'raw-img'
          prev-ref: '${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.DEFAULT_TAG }}'
          skip_compression: false
          version: '${{ steps.metadata.outputs.tags }}'
          labels: '${{ steps.metadata.outputs.labels }}'

      - name: Load in podman and tag
        run: |
          IMAGE=$(podman pull ${{ steps.rechunk.outputs.ref }})
          sudo rm -rf ${{ steps.rechunk.outputs.output }}
          for tag in ${{ steps.metadata.outputs.tags }}; do
            podman tag $IMAGE "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:$tag"
          done

      - name: Login to GitHub Container Registry
        uses: docker/login-action@af1e73f918a031802d376d3c8bbc3fe56130a9b0
        if: github.event_name != 'pull_request'
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Push To GHCR
        if: github.event_name != 'pull_request'
        run: |
          set -euo pipefail

          retries=5
          delay=10

          # Loop through each tag
          for tag in ${{ steps.metadata.outputs.tags }}; do
            echo "Pushing tag: $tag"

            for attempt in $(seq 1 $retries); do
              echo "  Attempt $attempt/$retries for $tag..."
              if podman push "${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:$tag" --tls-verify=true; then
                echo "  Push of $tag succeeded"
                break
              fi

              if [ "$attempt" -lt "$retries" ]; then
                echo "  Push of $tag failed — retrying in $delay seconds..."
                sleep $delay
              else
                echo "  Push of $tag failed after $retries attempts"
                exit 1
              fi
            done
          done

      - name: Install Cosign
        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6
        if: github.event_name != 'pull_request'
        with:
          cosign-release: 'v2.6.1'

      - name: Sign container image
        if: github.event_name != 'pull_request'
        run: |
          IMAGE_FULL="${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}"
          for tag in ${{ steps.metadata.outputs.tags }}; do
            cosign sign -y --key env://COSIGN_PRIVATE_KEY $IMAGE_FULL:$tag
          done
        env:
          TAGS: ${{ steps.push.outputs.digest }}
          COSIGN_EXPERIMENTAL: false
          COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}