Add Jenkinsfile for CI/CD pipeline

Jenkinsfile

@@ -0,0 +1,141 @@
+pipeline {
+    agent any
+    
+    tools {
+        // Gradle은 프로젝트에 포함된 gradlew 사용
+    }
+    
+    environment {
+        PROJECT_NAME = 'springboot-api'
+        GRADLE_OPTS = '-Dorg.gradle.daemon=false'
+        JAVA_HOME = '/usr/lib/jvm/java-17-openjdk-amd64'
+    }
+    
+    stages {
+        stage('Checkout') {
+            steps {
+                echo '==== Checking out code from Gitea ===='
+                checkout scm
+                sh 'ls -lah'
+            }
+        }
+        
+        stage('Gradle Wrapper Permissions') {
+            steps {
+                echo '==== Setting Gradle wrapper permissions ===='
+                dir('springboot-api') {
+                    sh 'chmod +x gradlew'
+                }
+            }
+        }
+        
+        stage('Build Info') {
+            steps {
+                echo '==== Environment Information ===='
+                dir('springboot-api') {
+                    sh '''
+                        java -version
+                        ./gradlew --version
+                    '''
+                }
+            }
+        }
+        
+        stage('Clean') {
+            steps {
+                echo '==== Cleaning previous builds ===='
+                dir('springboot-api') {
+                    sh './gradlew clean'
+                }
+            }
+        }
+        
+        stage('Compile') {
+            steps {
+                echo '==== Compiling source code ===='
+                dir('springboot-api') {
+                    sh './gradlew compileJava'
+                }
+            }
+        }
+        
+        stage('Test') {
+            steps {
+                echo '==== Running unit tests ===='
+                dir('springboot-api') {
+                    sh './gradlew test --no-daemon || true'
+                }
+            }
+            post {
+                always {
+                    // 테스트 결과 보고서 저장
+                    junit '**/build/test-results/test/*.xml'
+                }
+            }
+        }
+        
+        stage('Build') {
+            steps {
+                echo '==== Building Spring Boot application ===='
+                dir('springboot-api') {
+                    sh './gradlew build -x test --no-daemon'
+                }
+            }
+        }
+        
+        stage('Archive Artifacts') {
+            steps {
+                echo '==== Archiving JAR file ===='
+                dir('springboot-api') {
+                    archiveArtifacts artifacts: 'build/libs/*.jar', fingerprint: true
+                    sh 'ls -lh build/libs/'
+                }
+            }
+        }
+        
+        stage('Docker Build') {
+            when {
+                branch 'master'  // master 브랜치에서만 Docker 이미지 빌드
+            }
+            steps {
+                echo '==== Building Docker image ===='
+                dir('springboot-api') {
+                    script {
+                        def jarFile = sh(
+                            script: 'ls build/libs/*.jar | head -1',
+                            returnStdout: true
+                        ).trim()
+                        echo "JAR file: ${jarFile}"
+                        
+                        // Docker 이미지 빌드 (선택사항)
+                        // sh "docker build -t springboot-api:${BUILD_NUMBER} ."
+                    }
+                }
+            }
+        }
+        
+        stage('Deploy Info') {
+            steps {
+                echo '==== Build completed successfully ===='
+                echo "Project: ${PROJECT_NAME}"
+                echo "Build Number: ${BUILD_NUMBER}"
+                echo "JAR file is ready for deployment"
+            }
+        }
+    }
+    
+    post {
+        success {
+            echo '✅ Pipeline completed successfully!'
+            // 추가: 슬랙 알림, 이메일 등
+        }
+        failure {
+            echo '❌ Pipeline failed!'
+            // 추가: 실패 알림
+        }
+        always {
+            echo '==== Cleaning up workspace ===='
+            cleanWs()
+        }
+    }
+}