name: Docker Image Downloader

on:
  workflow_dispatch: # 버튼을 눌러 수동 실행

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Pull and Save Docker Image
        run: |
          docker pull prom/prometheus:latest
          docker save prom/prometheus:latest -o prometheus.tar

      - name: Upload Artifact
        uses: actions/upload-artifact@v4
        with:
          name: prometheus-image
          path: prometheus.tar
          retention-days: 1 # 보관 기간 (최대 90일)