Continuous Delivery with Docker and Jenkins

Adding the Docker build to the pipeline

The last step we need is adding the "Docker build" stage to Jenkinsfile. Usually, the JAR packaging is also declared as a separate Package stage:

stage("Package") {     steps {          sh "./gradlew build"     }}stage("Docker build") {     steps {          sh "docker build -t leszko/calculator ."     }}

We don't explicitly version the image, but each image has a unique hash ID. We will cover the explicit versioning in the next chapter.

Note that we used the Docker registry name in the image tag. There is no need to have the image tagged twice calculator and leszko/calculator.

When we commit and push Jenkinsfile, the pipeline build should start automatically and we should see all boxes green. This means that the Docker image has been ...