libkernel/.github/workflows/push_image.yml

name: Publish Docker Image
on:
  push:
    branches:
      - master

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value={{date 'YYYYMMDD'}}-{{sha}}
            type=raw,value={{date 'YYYYMMDD'}}
            type=raw,value=latest

      - name: Log into registry ${{ env.REGISTRY }}
        uses: docker/login-action@v2.1.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.CI_PAT_WRITE_PACKAGE }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v4
        with:
          context: .
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          push: true