added the docker file

Dockerfile

@@ -0,0 +1,14 @@
+FROM maven:3.9-eclipse-temurin-17 AS builder
+# build the java code
+COPY . /spc
+WORKDIR /spc
+RUN mvn package
+# this will create a spring petclinic jar file
+
+
+FROM eclipse-temurin:17-jre AS runner
+COPY --from=builder --chown=ubuntu /spc/target/spring-petclinic-3.3.0-SNAPSHOT.jar /app/spring-petclinic.jar
+USER ubuntu
+WORKDIR /app
+EXPOSE 8080
+CMD ["java", "-jar", "spring-petclinic.jar"]

azure-pipelines.yml

@@ -51,3 +51,12 @@ steps:
   inputs:
     pollingTimeoutSec: '300'
   displayName: 'Publish Quality Gate Result'
+
+
+- task: Docker@2
+  inputs:
+    containerRegistry: 'DOCKER_HUB'
+    repository: 'kasinenichandu/spring-petclinic'
+    command: 'buildAndPush'
+    Dockerfile: '**/Dockerfile'
+    tags: '$(Build.BuildId)'