From b01542461caefc3fe36246379994666a968e095e Mon Sep 17 00:00:00 2001
From: kallin <kedia1004@gmail.com>
Date: Thu, 6 Aug 2026 04:19:57 +0900
Subject: [PATCH] =?UTF-8?q?chore:=20CI/=EB=B0=B0=ED=8F=AC=20Docker=20?=
 =?UTF-8?q?=EC=9D=B4=EB=AF=B8=EC=A7=80=20=EB=B9=8C=EB=93=9C=EC=97=90=20Git?=
 =?UTF-8?q?Hub=20Actions=20=EC=BA=90=EC=8B=9C=20=EC=A0=81=EC=9A=A9?=
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Docker 빌드 단계에 레이어 캐시가 없어 매번 의존성 재다운로드·전체 재컴파일이
발생하던 문제. docker/build-push-action + cache-from/cache-to: type=gha로
레이어를 캐싱하고, 배포 워크플로우는 CI가 같은 커밋으로 미리 써둔 캐시를
재사용하도록 함.
---
 .github/workflows/ci.yml     | 11 ++++++++++-
 .github/workflows/deploy.yml |  5 +++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d47f4a6..fa6ef0b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -33,5 +33,14 @@ jobs:
       - name: Build and Test
         run: ./gradlew --no-daemon build
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Build Docker image
-        run: docker build --tag promsearch:ci .
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          tags: promsearch:ci
+          push: false
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index b3c0c24..ed1922c 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -27,6 +27,9 @@ jobs:
         with:
           ref: ${{ github.event.workflow_run.head_sha }}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -41,6 +44,8 @@ jobs:
           tags: |
             ${{ secrets.DOCKERHUB_USERNAME }}/promsearch:latest
             ${{ secrets.DOCKERHUB_USERNAME }}/promsearch:${{ github.event.workflow_run.head_sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
 
   deploy:
     needs: build-and-push