Skip to main content

Build & Deploy docker image using Gradle

 Build & Deploy docker image using Gradle


You are tasked to create a gradle java application, Dockerfile to run the 'springbootify.jar' file on port 8080, use suitable gradle plugins to configure the gradle application to build a docker image and run the docker container. On successful deployment of docker container, hit the url (http://localhost:8080/doit) and you could see the message on the webpage.

Note:

  • Jar file 'springbootify.jar' is already given in folder /Desktop/Project no need to build a need jar file.
  • Please do install gradle using the command "sudo apt install gradle"
  • Please do use "sudo service jenkins stop"
  • Create a Docker & gradle application in the path /Desktop/Project
  • Make the gradle project operable for both gradle & gradlew commands Docker base image: openj dk: 12-jdk-alpine.

Solving the tasks...

sudo apt install gradle
sudo service jenkins stop
cd /Desktop/Project

Create a new Gradle project using the following command:

gradle init

Add the following plugins to the build.gradle file to configure the Gradle application to build a Docker image:

build.gradle

plugins {
    id 'com.palantir.docker' version '0.22.1'
    id 'com.palantir.docker-run' version '0.22.1'
}
version '1.0-SNAPSHOT'
docker {
    name "${project.name}:${project.version}"
    files 'springbootify.jar'
}
dockerRun {
    name "${project.name}"
    image "${project.name}:${project.version}"
    ports '8080:8080'
    clean true
}

Now create a Dockerfile

Dockerfile

FROM openjdk:12-jdk-alpine
COPY springbootify.jar springbootify.jar
CMD ["java","-jar", "springbootify.jar"]

Lets first create a docker image

./gradlew docker

Check the created the docker image

docker ps

Next, run the docker image

./gradlew dockerRun

After this you can visit https://localhost:8080/doit, you can view the message

That's it! You have successfully created a Gradle Java application and Dockerfile, and deployed it using Docker.

Just some useful commands

# you can run jar file with, and check the https://localhost:8080/doit
java -jar springbootify.jar

# you can also use gradle to build java project
gradle init --type java-application

# to see all images
docker ps -a

# to remove image, use option -f to force delete
docker rmi <image-name/id>

# to remove container, use option -f to force delete
docker rm <container-name/id>

References: https://tomgregory.com/automating-docker-builds-with-gradle/


--- THANK YOU ---
Labels:

Comments

Post a Comment

Popular posts from this blog

Kubernetes2

  Challenge 2 ConfigMaps: Step-1: To create a ConfigMap named 'fresco-config' with the key-value pair SERVER_URL= https://www.fresco.me , use the following command: kubectl create configmap fresco-config --from-literal=SERVER_URL=https://www.fresco.me To verify if the ConfigMap is created, use the following command: kubectl get configmap fresco-config Step-2: To create an nginx pod with the environmental variable SERVER_URL_ENV using the ConfigMap created earlier, use the following YAML template: apiVersion: v1 kind: Pod metadata: name: fresco-nginx-pod spec: containers: - name: fresco-nginx-container image: nginx env: - name: SERVER_URL_ENV valueFrom: configMapKeyRef: name: fresco-config key: SERVER_URL Deploy the above file you can name it deployment.yaml and use the command: kubectl apply -f deployment.yaml To test your configuration by executing the following command: ...
Post a Comment
Read more

Kubernetes1

  Challenge 1 Welcome to the Kubernetes challenge, your task is to follow the below steps and complete them successfully. Environment Setup Check whether docker & minikube are properly installed and configured. Start Minikube and execute this command to sync host docker with minikube docker minikube -p minikube docker-env and eval $(minikube docker-env) Step-1 Create a pod object using kubectl run command with google's sample image: gcr.io/google-samples/kubernetes-bootcamp:v1 and expose it on port 8080, name the pod as firstapp. Check if the pod creation is successful by running the command: kubectl get pod firstapp Step-2 Expose the application to the local VM by creating a Service object of type NodePort. Check if the service is created by running the command: kubectl get svc firstapp Step-3 Create another deployment using a 'YAML' file, create a deployment.yaml file that contains information of the number of replicas and the images to be ...
Post a Comment
Read more

Docker + Kubernetes + Ansible

  Docker + Kubernetes + Ansible ----------------------------------------------------------------------------------------------------------------------------- Web Application Deployment using Kubernetes and Ansible A Flask application named "application.py" is given in the path Run the given setup.sh file given in the path to install the required dependencies be the challenge. 1. Start Minikube and sync host Docker with Minikube Docker. Note: If you get any errors while starting Minikube, please do try again by running the command to start Minikube. 2. Create a Dockerfile in the path and dockerize the given 'Flask' application as 'webapp-img' using 'python:alpine3.7' as its base image. 3. Create a 'deployment.yml' file in the path to create a Kubernetes deployment object named "web-deployment" with 3 replicas which uses the 'webapp-img' and runs a container named "webapp-container". Add Label "app=webapp" an...
Post a Comment
Read more