refactor[git]: git ignore 수정

Author: DooHyoJeong

.github/pull_request_template.md

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+## 📌 PR 제목
+- [Feat] 기능 추가
+- [Fix] 버그 수정
+- [Docs] 문서 수정
+- [Refactor] 리팩토링
+- [Chore] 기타 작업
+
+## ✅ 작업 내용
+- 어떤 작업을 했는지 간단히 설명해주세요.
+
+## 📝 참고 사항
+- 리뷰어가 알면 좋을 내용

.github/workflows/CI-CD_Pipeline.yml

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+name: CI-CD_Pipeline
+
+permissions:
+  contents: read
+  packages: write
+  id-token: write
+
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+  workflow_dispatch:
+
+jobs:
+  tests:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest ]
+        include:
+          - os: ubuntu-latest
+            gradle_cmd: "./gradlew"
+            report_path: "backend/build/reports/tests"
+            domain_tasks: "testUser testExchange testTrade_log testWallet testCoin"
+
+    runs-on: ${{ matrix.os }}
+    env:
+      SPRING_PROFILES_ACTIVE: test
+      JWT_SECRET_KEY: ${{ secrets.JWT_SECRET_KEY }}
+      REDIS_PORT: ${{ secrets.REDIS_PORT }}
+      REDIS_HOST: ${{ secrets.REDIS_HOST }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+          cache: gradle
+
+      # ✅ gradlew 실행 권한 부여
+      - name: Grant execute permission for gradlew
+        run: chmod +x backend/gradlew
+
+      - name: Run unit, and domain tests
+        run: ${{ matrix.gradle_cmd }} clean test
+        working-directory: backend
+
+      - name: Upload Test Reports
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-reports-${{ matrix.os }}
+          path: ${{ matrix.report_path }}
+          retention-days: 7
+
+  build-artifacts:
+    needs: tests
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main'   # ✅ main 브랜치일 때만 실행
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+          cache: gradle
+
+      # ✅ gradlew 실행 권한 부여
+      - name: Grant execute permission for gradlew
+        run: chmod +x backend/gradlew
+
+      - name: Gradle bootJar
+        working-directory: backend
+        run: ./gradlew --no-daemon clean bootJar -x test
+
+      - name: Copy JAR to dist
+        working-directory: backend
+        run: |
+          mkdir -p dist
+          cp $(ls build/libs/*.jar | grep -v plain | head -n 1) dist/app.jar
+
+      - name: Upload backend jar
+        uses: actions/upload-artifact@v4
+        with:
+          name: backend-jar
+          path: backend/dist/app.jar
+
+  docker-build:
+    needs: build-artifacts
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main'   # ✅ main 브랜치일 때만 실행
+    env:
+      REGISTRY: ghcr.io
+      IMAGE_PREFIX: ${{ github.repository_owner }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Download backend jar
+        uses: actions/download-artifact@v4
+        with:
+          name: backend-jar
+          path: backend/dist
+
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build & push backend (runtime-only)
+        uses: docker/build-push-action@v6
+        with:
+          context: backend
+          file: backend/Dockerfile
+          push: true
+          tags: |
+            ${{ env.REGISTRY }}/${{ env.IMAGE_PREFIX }}/back9-backend:${{ github.sha }}
+            ${{ env.REGISTRY }}/${{ env.IMAGE_PREFIX }}/back9-backend:latest
+          cache-from: type=gha
+          cache-to: type=gha,mode=max