name: Build Docker Image

on:
  push:
    tags:
      - 'v*'
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'

      - name: Install dependencies
        run: npm ci

      - name: Build application
        run: npm run build

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

      - name: Build Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: false
          load: true
          tags: configucci:latest
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Save Docker image as tarball
        run: docker save configucci:latest -o configucci.tar

      - name: Upload Docker image artifact
        uses: actions/upload-artifact@v4
        with:
          name: docker-image
          path: configucci.tar
          retention-days: 30