👷 CI 빌드 시스템 추가

- build.yml을 생성했습니다.

.github/workflows/gradle.yml

@@ -0,0 +1,83 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
+
+name: Java CI with Gradle
+
+on:
+  push:
+    branches: [ "main" ]
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v3
+
+      # JDK를 17 버전으로 세팅
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      # Gradle 캐싱-> 빌드 속도 UP
+      - name: Gradle caching
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      # application.yml 파일 생성
+      - name: make application.yaml
+        run: |
+          cd ./src/main/resources
+          touch ./application.yml
+          echo "${{ secrets.APPLICATION }}" >> ./application.yml
+        shell: bash
+
+      # Gradle로 빌드 실행
+      - name: Build with Gradle
+        run: ./gradlew bootJar
+
+      # image로부터 Metadata 추출
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPO }}
+          tags: |
+            type=sha
+
+      # image 빌드 및 도커허브에 push
+      - name: web docker build and push
+        run: |
+          docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_ACCESS_TOKEN }}
+          docker build -t ${{ secrets.DOCKER_REPO }}/kidari:${{ steps.meta.outputs.version }} .
+          docker push ${{ secrets.DOCKER_REPO }}/kidari:${{ steps.meta.outputs.version }}
+
+      # 빌드 결과 Slack 알람 전송
+      - name: Send Slack Alarms
+        uses: rtCamp/action-slack-notify@v2
+        env:
+          SLACK_CHANNEL: general
+          SLACK_COLOR: ${{ job.status }} # or a specific color like 'good' or '#ff00ff'
+          SLACK_ICON: https://github.com/rtCamp.png?size=48
+          SLACK_MESSAGE: 빌드 결과 => ${{ job.status }}
+          SLACK_TITLE: 빌드 결과 알람
+          SLACK_USERNAME: Notification-Bot
+          SLACK_WEBHOOK: ${{ secrets.SLACK_WEBHOOK_URL }}
+        if: always()