added more steps in pipeline

Jenkinsfile

@@ -1,11 +1,30 @@
 pipeline {
   agent any
+  
+  environment {
+    GIT_COMMIT_SHORT = sh(script: "git rev-parse --short HEAD", returnStdout: true).trim()
+    DOCKER_HUB_USER = "m1kkY8"
+  }
+
   stages {
     stage('checkStyle') {
+      when { not {branch 'main' }}
       steps {
         sh './gradlew checkstyleMain'
       }
     }
 
+    stage('Test') {
+      when { not {branch 'main' }}
+      steps {
+        sh './gradlew test'
+      }
+    }
+
+    stage('Build') {
+      steps {
+        sh './gradlew build -x test'
+      }
+    }
   }
-}
+}