feat: ci 프로세스 작성

Author: SangBeom-Hahn

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: ci
+on:
+  pull_request:
+    types: [opened, synchronize]
+    branches: [develop, main]
+    paths:
+    - ['backend/**', '.github/**']
+
+defaults:
+  run:
+    working-directory: backend    
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Repository를 가져온다
+      uses: actions/checkout@v4
+
+    - name: JDK 버전 17을 설치한다
+      uses: actions/setup-java@v4
+      with:
+        distribution: 'temurin'
+        java-version: '17'
+    
+    - name: gradle 의존성을 캐싱한다
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+        restore-keys: |
+          ${{ runner.os }}-gradle-
+
+    - name: gradlew 실행 권한을 부여한다
+      run: chmod +x gradlew
+
+    - name: gradle을 빌드한다
+      run: ./gradlew build
+
+    - name: 테스트 코드 실행 결과 리포트를 작성한다
+      uses: EnricoMi/publish-unit-test-result-action@v2
+      if: always()
+      with:
+        files: backend/build/test-results/test/TEST-*.xml    
+
+    - name: 테스트가 실패한 PR 코멘트를 등록한다
+      uses: mikepenz/action-junit-report@v5
+      if: always()
+      with:
+        report_paths: backend/build/test-results/test/TEST-*.xml