docker.yaml

name: "Docker"

on:
  push:
    branches:
      - "main"
  schedule:
    # https://crontab.guru/#@daily
    - cron: "0 0 * * *"

jobs:
  updater-base-image:
    runs-on: ubuntu-24.04
    permissions:
      id-token: write
      packages: write
      contents: read
      attestations: write
    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: ${{ github.repository }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - run: echo "TIMESTAMP=$(git log -1 --pretty=%ct)" >> $GITHUB_ENV
      - name: Build and push image
        uses: docker/build-push-action@v6
        id: push
        env:
          SOURCE_DATE_EPOCH: ${{ env.TIMESTAMP }}
        with:
          context: .
          push: true
          sbom: true
          platforms: linux/amd64,linux/arm64
          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:updater
      - name: Attest
        uses: actions/attest-build-provenance@v2
        id: attest
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true