[#20] chore : gradle.yml 추가

.github/workflows/gradle.yml

@@ -0,0 +1,49 @@
+# 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
+
+# 동작 조건 설정 : main, develop 브랜치에 push 혹은 pull request가 발생할 경우 동작
+on:
+  push:
+    branches: [ "main", "develop" ]
+  pull_request:
+    branches: [ "main", "develop" ]
+
+jobs:
+  # Spring Boot 애플리케이션을 빌드하여 도커허브에 푸시하는 과정
+  build-docker-image:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      # 1. Java 17 세팅
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      # 2. Spring Boot 애플리케이션 빌드
+      - name: Build with Gradle
+        uses: gradle/gradle-build-action@67421db6bd0bf253fb4bd25b31ebb98943c375e1
+        with:
+          arguments: clean bootJar
+
+      # 3. Docker 이미지 빌드
+      - name: docker image build
+        run: docker build -t ${{ secrets.DOCKERHUB_USERNAME }}/kbo-ticketing .
+
+      # 4. DockerHub 로그인
+      - name: docker login
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      # 5. Docker Hub 이미지 푸시
+      - name: docker Hub push
+        run: docker push ${{ secrets.DOCKERHUB_USERNAME }}/kbo-ticketing