change some property on build.yml(retry 3x)

.github/workflows/build.yml

@@ -34,6 +34,15 @@ jobs:
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
       # gradle bootBuildImage를 이용해 이미지를 만들고 원격 저장소에 Push
       # env에 민감 정보(환경변수)를 추가한다.
       - name: Build Image with Gradle and Push to DockerHub