Continuous Delivery with Docker and Jenkins

Versioning in the Jenkins pipeline

As described earlier, there are different possibilities when it comes to using software versioning and each of them can be implemented in Jenkins.

As an example, let's use the datetime.

In order to use the timestamp information from Jenkins, you need to install the Build Timestamp Plugin and set the timestamp format in the Jenkins configuration (for example, to "yyyyMMdd-HHmm").

In every place where we use the Docker image, we need to add the tag suffix: ${BUILD_TIMESTAMP}.

For example, the Docker build stage should look like this:

sh "docker build -t leszko/calculator:${BUILD_TIMESTAMP} ."

After the changes, when we run the Jenkins build, we should have the image tagged with the timestamp version in our ...