Update download-image.yml

.github/workflows/download-image.yml

@@ -1,20 +1,25 @@
 name: Docker Image Downloader
 
 on:
-  workflow_dispatch: # 버튼을 눌러 수동 실행
+  workflow_dispatch: # 수동 실행 버튼 활성화
 
 jobs:
-  build:
+  download:
     runs-on: ubuntu-latest
     steps:
-      - name: Pull and Save Docker Image
+      - name: Docker Image Pull
         run: |
+          # 빌드(build) 하지 않고 이미지를 바로 가져옵니다
           docker pull prom/prometheus:latest
+          
+      - name: Docker Image Save
+        run: |
+          # 가져온 이미지를 tar 파일로 압축합니다
           docker save prom/prometheus:latest -o prometheus.tar
           
-      - name: Upload Artifact
+      - name: Upload to GitHub Artifacts
         uses: actions/upload-artifact@v4
         with:
-          name: prometheus-image
+          name: prometheus-tar-file
           path: prometheus.tar
-          retention-days: 1 # 보관 기간 (최대 90일)
+          retention-days: 1