[#37] infra: 배포 CI 파이프라인

- S3 연결

.github/workflows/prod-ci.yml

@@ -0,0 +1,34 @@
+name: Prod-CI
+
+on:
+  pull_request:
+    branches: [ "release" ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # v4.0.0
+
+      - name: Build with Gradle Wrapper
+        run: ./gradlew build
+
+      - name: Show aws cli version
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+        run: |
+          aws s3 sync \
+          --region ap-northeast-2 \
+          build s3://gamja-bongsa
+          --delete