added dockerfile

Dockerfile

+FROM maven:3.6.0-jdk-11-slim AS TEMP_BUILD_IMAGE
+
+# RUN gradle build || return 0
+COPY src /home/app/src
+COPY pom.xml /home/app
+RUN mvn -f /home/app/pom.xml clean package
+
+# actual container
+FROM openjdk:11-jre-slim
+COPY --from=TEMP_BUILD_IMAGE /home/app/target/spring-boot-complete-0.0.1-SNAPSHOT.jar /usr/local/lib/hello-world.jar
+
+EXPOSE 8080
+ENTRYPOINT ["java","-jar","/usr/local/lib/hello-world.jar"]
\ No newline at end of file

Jenkinsfile

@@ -73,5 +73,20 @@ pipeline {
                 }
             }
         }
+
+        stage('Build App and Make Image') {
+            steps {
+                echo 'Building App, Making Image and Pushing Image'
+                container(name: 'kaniko', shell: '/busybox/sh') {
+                    dir("inventory-backend"){
+                        sh "pwd"
+                        sh "ls"
+                        sh '''#!/busybox/sh
+                        /kaniko/executor -f `pwd`/Dockerfile -c `pwd` --cache=true --destination=nexus.mynisum.com:2376/ascend-kafka/ascend2-inventory-backend:latest
+                        '''
+                    }
+                }
+            }
+        }
 	}
 }