docker-publish.yml

name: Docker publish

on:
  # schedule:
  #   - cron: '18 5 * * *'
  push:
    branches: ["main"]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository_owner }}/ubuntu

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
    strategy:
      matrix:
        distro: [ubuntu]
    defaults:
      run:
        working-directory: ./${{ matrix.distro }}

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      # Add support for more platforms with QEMU (optional)
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      # By default, builder driver is `docker`, which currently not supported
      # building multi-platform images or exporting cache.
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log into ${{ env.REGISTRY }}
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Docker builder info
        run: |
          set -x
          docker buildx version
          docker buildx ls
          docker buildx inspect

          pwd
          ls -ahl

      - name: Build and push Docker image
        id: publish
        uses: docker/build-push-action@v5
        with:
          context: ./${{ matrix.distro }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max