build.yml

---
name: Build container image
on:
  pull_request:
    branches:
      - main
  schedule:
    - cron: "05 10 * * *" # 10:05am UTC everyday
  push:
    branches:
      - main
      - testing
    paths-ignore:
      - "**/README.md"
  workflow_dispatch:

env:
  IMAGE_DESC: "Custom Bazzite image based on Niri and Noctalia, built for the Data Lab Techs out there."
  IMAGE_KEYWORDS: "bootc,ublue,universal-blue,bazzite,fedora,nvidia,niri,noctalia"
  IMAGE_LOGO_URL: "https://raw.githubusercontent.com/DataLabTechTV/dltos/refs/heads/main/repo_files/dltos-logo.png"
  IMAGE_NAME: "${{ github.event.repository.name }}"
  IMAGE_REGISTRY: "ghcr.io/${{ github.repository_owner }}"
  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
    runs-on: ubuntu-24.04

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

    steps:
      - name: Prepare environment
        run: |
          # Lowercase the image uri
          echo "IMAGE_REGISTRY=${IMAGE_REGISTRY,,}" >> ${GITHUB_ENV}
          echo "IMAGE_NAME=${IMAGE_NAME,,}" >> ${GITHUB_ENV}

      - name: Checkout
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      - name: Maximize build space
        uses: ublue-os/remove-unwanted-software@695eb75bc387dbcd9685a8e72d23439d8686cba6

      - name: Get current date
        id: date
        run: |
          # This generates a timestamp like what is defined on the ArtifactHub documentation
          # E.G: 2022-02-08T15:38:15Z'
          # https://artifacthub.io/docs/topics/repositories/container-images/
          # https://linux.die.net/man/1/date
          echo "date=$(date -u +%Y\-%m\-%d\T%H\:%M\:%S\Z)" >> $GITHUB_OUTPUT

      - name: Image Metadata
        uses: docker/metadata-action@030e881283bb7a6894de51c315a6bfe6a94e05cf # v6.0.0
        id: metadata
        with:
          tags: |
            type=raw,value=${{ env.DEFAULT_TAG }},enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=raw,value=${{ env.DEFAULT_TAG }}.{{date 'YYYYMMDD'}},enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=raw,value=${{ github.ref_name }},enable=${{ github.ref != format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=raw,value=${{ github.ref_name }}.{{date 'YYYYMMDD'}},enable=${{ github.ref != format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=raw,value={{date 'YYYYMMDD'}},enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
            type=sha,enable=${{ github.event_name == 'pull_request' }}
            type=ref,event=pr
          labels: |
            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}/${{ github.sha }}/README.md
            org.opencontainers.image.created=${{ 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=${{ env.DEFAULT_TAG }}.{{date 'YYYYMMDD'}}
            io.artifacthub.package.deprecated=false
            io.artifacthub.package.keywords=${{ env.IMAGE_KEYWORDS }}
            io.artifacthub.package.license=Apache-2.0
            io.artifacthub.package.logo-url=${{ env.IMAGE_LOGO_URL }}
            io.artifacthub.package.prerelease=false
            containers.bootc=1
          sep-tags: " "
          sep-annotations: " "

      - name: Login to GitHub Container Registry
        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
        if: github.event_name != 'pull_request' && (github.ref == format('refs/heads/{0}', github.event.repository.default_branch) || github.ref == 'refs/heads/testing')
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Restore Buildah Cache
        uses: actions/cache/restore@v5
        with:
          path: /var/tmp/buildah-cache-*
          key: ${{ runner.os }}-${{ runner.arch }}-buildah-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-${{ runner.arch }}-buildah-

      - name: Build Image
        id: build_image
        run: |
          LABELS="${{ steps.metadata.outputs.labels }}"
          LABEL_ARGS=()

          while IFS= read -r label; do
            if [ -n "$label" ]; then
              LABEL_ARGS+=(--label "$label")
            fi
          done <<< "$LABELS"

          export REGISTRY_AUTH_FILE="$HOME/.docker/config.json"
          CACHE_IMAGE="${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}-cache"

          sudo -E buildah build \
            --layers \
            --cache-from "$CACHE_IMAGE" \
            --cache-to "$CACHE_IMAGE" \
            "${LABEL_ARGS[@]}" \
            --tag raw-img \
            -f ./Containerfile .

      - name: Fix Cache Permissions
        run: |
          [ -d /var/tmp/buildah-cache-0 ] && sudo chmod -R 777 /var/tmp/buildah-cache-0 || true

      - name: Save Buildah Cache
        uses: actions/cache/save@v5
        with:
          path: /var/tmp/buildah-cache-*
          key: ${{ runner.os }}-${{ runner.arch }}-buildah-${{ github.sha }}

      - name: Run Rechunker
        id: rechunk
        run: |
          container=$(sudo buildah from raw-img)
          mnt=$(sudo buildah mount $container)
          sudo bash -c "rm -rf $mnt/run/.* $mnt/run/* $mnt/tmp/.* $mnt/tmp/*"
          sudo buildah umount $container
          sudo buildah config --label "-" $container
          sudo buildah commit --identity-label=false --rm $container raw-img

          sudo podman run --rm --privileged \
            --volume /var/lib/containers:/var/lib/containers \
            quay.io/centos-bootc/centos-bootc:stream10 \
            rpm-ostree compose build-chunked-oci \
              --bootc \
              --format-version 2 \
              --from localhost/raw-img \
              --output containers-storage:localhost/chunked-img
          sudo podman untag raw-img

          echo "ref=containers-storage:localhost/chunked-img" >> "$GITHUB_OUTPUT"

      - name: Push to GHCR
        if: github.event_name != 'pull_request' && (github.ref == format('refs/heads/{0}', github.event.repository.default_branch) || github.ref == 'refs/heads/testing')
        run: |
          export REGISTRY_AUTH_FILE="$HOME/.docker/config.json"

          for tag in ${{ steps.metadata.outputs.tags }}; do
            sudo -E skopeo copy \
              ${{ steps.rechunk.outputs.ref }} \
              docker://${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}:${tag}
          done

      - name: Install Cosign
        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
        if: github.event_name != 'pull_request' && (github.ref == format('refs/heads/{0}', github.event.repository.default_branch) || github.ref == 'refs/heads/testing')
        with:
          cosign-release: "v2.6.1"

      - name: Sign container image
        if: github.event_name != 'pull_request' && (github.ref == format('refs/heads/{0}', github.event.repository.default_branch) || github.ref == 'refs/heads/testing')
        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 }}