build-and-publish.yaml

---
name: Build  Desktop Image

on:
  push:
    branches:
      - main
  schedule:
    - cron: "0 14 * * *"

jobs:
  build-and-publish:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write # needed for signing the images with GitHub OIDC Token

    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Check current branch
        if: github.ref != 'refs/heads/main'
        run: exit 0

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4

      - name: Build Image
        id: build_image
        uses: redhat-actions/buildah-build@v2
        with:
          containerfiles: |
            ./images/desktop/Containerfile
          context: ./images/desktop
          image: ghcr.io/frzifus/desktop
          tags: latest
          archs: amd64 # disable, arm64
          oci: false

      - id: docker_meta
        uses: docker/metadata-action@v6.0.0
        with:
          images: ${{ steps.build_image.outputs.image }}
          tags: type=sha,format=long,type=ref,event=branch

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v4
        id: registry_login
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Push To GHCR
        uses: redhat-actions/push-to-registry@v2
        id: push
        with:
          image: ${{ steps.build_image.outputs.image }}
          tags: ${{ steps.build_image.outputs.tags }}
          registry: ghcr.io

      - name: Install Cosign
        uses: sigstore/cosign-installer@v4.1.1

      - name: Sign the images with GitHub OIDC Token
        env:
          IMAGE: ${{ steps.build_image.outputs.image }}
          DIGEST: ${{ steps.push.outputs.digest }}
          TAGS: ${{ steps.docker_meta.outputs.tags }}
        run: cosign sign --yes ${IMAGE}@${DIGEST}

      # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
      # - name: Sign image with a key
      #   run: |
      #     images=""
      #     for tag in ${TAGS}; do
      #       images+="${tag}@${DIGEST} "
      #     done
      #     cosign sign --yes --key env://COSIGN_PRIVATE_KEY ${images}
      #   env:
      #     TAGS: ${{ steps.docker_meta.outputs.tags }}
      #     COSIGN_PRIVATE_KEY: ${{ secrets.COSIGN_PRIVATE_KEY }}
      #     COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
      #     DIGEST: ${{ steps.build-and-push.outputs.digest }}