added pipeline and dockerfile

Dockerfile

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+FROM maven:3.9-eclipse-temurin-17 AS builder
+COPY . /spc
+WORKDIR /spc
+RUN mvn package
+
+FROM eclipse-temurin:17-alpine
+LABEL org="spc build" author="venkat"
+ARG USERNAME=spc
+RUN apk add --no-cache bash
+RUN adduser -D -h /apps -s /bin/bash/ ${USERNAME}
+USER ${USERNAME}
+COPY --from=builder --chown={USERNAME}:{USERNAME} /spc/target/spring-petclinic-3.4.0-SNAPSHOT.jar /apps/spring-petclinic-3.4.0-SNAPSHOT.jar
+WORKDIR /apps
+EXPOSE 8080

azure-pipelines.yml

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+pool: Default
+
+pr: 
+  - develop
+
+stages:
+  - stage: CI
+    jobs:
+      - job: Build
+        displayName: 'Building and Testing'
+        steps:  
+
+steps:
+  - task: Maven@4
+    displayName: 'build and publish the maven code'
+    inputs:
+      mavenPomFile: pom.xml
+      goals: 'clean package'
+      testResultsFiles: '**/surefire-reports/TEST-*.xml'
+      publishJUnitResults: true
+ 
+  - task: CopyFiles@2
+    inputs:
+      contents: '**/*.jar'
+      targetFolder: '$(Build.ArtifactStagingDirectory)'
+
+  - task: PublishBuildArtifacts@1
+    inputs:
+      pathToPublish: '$(Build.ArtifactStagingDirectory)'
+      artifactName: drop
+
+  - task: Docker@2
+    displayName: 'Build docker image'  
+    inputs:
+      command: 'buildAndPush'
+      Dockerfile: './Dockerfile'
+      repository: venkeyboda/spring-petclinic
+      tags: '$(Build.BuildId)'
+
+    

setup.md

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+# Steps
+
+### DEVELOP BRANCH PULL BASED
+-----------------------------
+* Java-based Spring Petclinic application
+* Pull request-based development
+* Create a multi-stage Dockerfile for the Spring Petclinic application on the `develop`    branch
+* Execute Dockerfile Using Command
+```bash
+# Create image command
+docker image build -t spc:1.0 .
+docker image build -t <your image:tag> (dockerfile name)
+# Check if the image was created
+docker image ls
+# Check if your image is running in a container (for verification purposes)
+docker container run -P -d --name mytest spc:1.0
+docker container run -P -d --name <container name> <your image:tag>
+# Check if the container is running (to verify container status)
+docker container ls
+```
+* Image Scanning with Trivy
+* Now, to scan your image with Trivy, follow these steps:
+* First, install Trivy on your VM or EC2 instance.
+```bash
+sudo apt-get install wget apt-transport-https gnupg lsb-release
+wget -qO - https://aquasecurity.github.io/trivy-repo/deb/public.key | gpg --dearmor | sudo tee /usr/share/keyrings/trivy.gpg > /dev/null
+echo "deb [signed-by=/usr/share/keyrings/trivy.gpg] https://aquasecurity.github.io/trivy-repo/deb $(lsb_release -sc) main" | sudo tee -a /etc/apt/sources.list.d/trivy.list
+sudo apt-get update
+sudo apt-get install trivy -y
+```
+### After Trivy is installed, scan your image using the following command:
+```bash
+trivy image spc:1.0
+trivy image <image:tag>
+```
+#############################################################################################################################################################################
+
+### RELEASE BRANCH PUSH BASED
+-----------------------------
+* Push Based `Release`
+* Multiple developers have made changes, so we will scan the Docker image again.
+* On the release branch, scan the Docker image with Trivy.
+### After Trivy is installed, use the following command:
+```bash
+trivy image spc:1.0
+trivy image <image:tag>
+```
+* The output will show vulnerabilities or reports.
+* Pushing the Image to a Registry
+* Once the image scan is completed, we can push the image to a registry such as Docker Hub, ECR, or ACR.
+### To push to Docker Hub, follow these steps:
+```bash
+docker login
+docker image tag <docke image> <repousename>/<reponame>:<tag>
+docker image tag spc:1.0 longflew/javaimagecicd:1.0
+docker image push longflew/javaimagecicd:1.0
+```
+##### Note: Ensure k8s Cluster(AKS or EKS) will be created 
+### Installing helm 
+* [Refer Here](https://helm.sh/docs/intro/install/) for installing Helm 
+* Once installation completed run the following commands
+* To Create a new helm chart repo
+`helm create <your chat>` 
+`helm create spc-chart`
+* Deploy the application in k8s using helm , the command will be
+ `helm install <release name> <chart name>`
+ `helm install spc-release spc-chart`
+* Check the appliocation running or not using the k8s commands 
+```bash
+kubectl get po
+kubectl get svc
+```
+* Take the IP or DNS of the service and open new Browser and paste the IP or DNS.
+
+### Upgrade docker image in helm
+* Whenever we upgrade the Docker image in Helm, the deployment manifest file is also automatically updated with the new image
+* After making further changes, we updated the values.yaml file to modify the image tag.
+* use the following command:
+```bash
+# docker image upgrade 
+helm upgrade spc-release spc-chart -f values.yaml --set image.tag=new-image-tag
+
+# Verify the Upgrade
+helm get all <release name>
+helm get all spc-release
+```
+
+