docker-publish.yml

name: Build and Push Docker Image
on:
  push:
    branches:
      - main
    tags:
      - v*
jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    steps:
      - uses: actions/checkout@v4
      - name: Log in to GitHub Container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository }}
      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v1
        with:
          subject-name: ghcr.io/${{ github.repository }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true