[Feat]: ci 액션 추가

.github/workflows/cicd.yml

@@ -0,0 +1,33 @@
+name: Build & Deploy
+
+on:
+  push:
+    branches: [ "main" ] # main 브랜치에 push가 발생하면 workflow가 실행됩니다.
+permissions:
+  contents: read # 권한을 설정합니다.
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+
+    # set up java
+    steps:
+      - name: Checkout Repository # 저장소를 체크아웃합니다.
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17 # JDK 17을 설정합니다.
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'corretto'
+
+      - name: Setup Gradle # Gradle을 설정합니다.
+        run: |
+          chmod +x ./gradlew
+          ./gradlew clean build
+
+      - name: Build docker image and push to docker hub # Docker 이미지를 빌드하고 Docker Hub에 푸시합니다.
+        run: |
+          docker login -u ${{ secrets.DOCKERHUB_USERNAME }} -p ${{ secrets.DOCKERHUB_TOKEN }}
+          docker build -t ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKER_REPOSITORY }}:${{ github.sha }} .
+          docker push ${{ secrets.DOCKERHUB_USERNAME }}/${{ secrets.DOCKER_REPOSITORY }}:${{ github.sha }}