flagger/.github/workflows/docker.yaml

name: Build and Push Docker Image

on: workflow_call

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

jobs:
  docker:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6
        with:
          submodules: true

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3.11.1

      - name: Log into registry ${{ env.REGISTRY }}
        uses: docker/login-action@v3.6.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5.10.0
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=ref,event=tag
            type=sha

      - name: Build and push Docker image
        uses: docker/build-push-action@v6.18.0
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max