💚 ci: CI/CD 파이프라인 설정 수정

.github/workflows/cd.yml

@@ -1,10 +1,10 @@
 name: CD
 
 on:
-  push:
-    branches:
-      - main # main 브랜치 push 시 자동 배포
-  workflow_dispatch: # 수동 실행
+  workflow_run:
+    workflows: ["CI with Gradle"]   # CI 워크플로 이름과 정확히 일치해야 함
+    types: [completed]              # CI가 끝났을 때 트리거
+    branches: [main]                # main 에서만
 
 permissions:
   contents: read

.github/workflows/ci.yml

@@ -42,6 +42,12 @@ jobs:
       - name: Build JAR
         run: ./gradlew bootJar -x test --no-daemon
 
+      - name: Upload JAR artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: app-jar
+          path: build/libs/*.jar
+
   docker-push:
     name: Docker Build & Push
     if: github.event_name != 'pull_request' && github.ref == 'refs/heads/main'
@@ -52,6 +58,12 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Download JAR artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: app-jar
+          path: build/libs
+
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with: