ci: yarn 캐시 및 Corepack 설정 개선

- Corepack 설정 단계 추가 및 [email protected] 활성화
- yarn 캐시 디렉토리 경로를 가져오는 단계 추가
- yarn 의존성 캐싱을 위한 단계 추가
- 의존성 설치 명령어를 --inline-builds 옵션으로 수정

Author: Cllaude99

.github/workflows/ci.yml

@@ -11,19 +11,34 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout code
+        uses: actions/checkout@v4
 
-      - name: Set up Node.js
+      - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
           node-version: '20'
-          cache: 'yarn'
 
-      - name: Enable Corepack
-        run: corepack enable
+      - name: Setup Corepack
+        run: |
+          corepack enable
+          corepack prepare [email protected] --activate
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
 
-      - name: Install dependencies
-        run: yarn install --immutable --immutable-cache
+      - name: Cache yarn dependencies
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: yarn-cache-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            yarn-cache-
+
+      - name: Install Dependencies
+        run: |
+          yarn install --immutable --inline-builds
 
       - name: Build shared packages
         run: |