.github/workflows/deploy.yml

name: Docker Image CI

on:
  push:
    # ⚠️  PRODUCTION ONLY — never triggered by dev or PRs
    branches: ["main"]
    # Ignore doc-only changes to avoid unnecessary image builds
    paths-ignore:
      - "**.md"
      - ".github/ISSUE_TEMPLATE/**"
      - ".github/pull_request_template.md"
      - "CONTRIBUTING.md"

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

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

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

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

      - name: Extract metadata (tags, labels)
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}