Tell us about the pipelines in Jenkins — what have you written?

In Jenkins, pipelines are descriptions of build, test, and deployment processes in the form of code (Pipeline as Code). They are usually written in Groovy DSL.

A pipeline allows automating CI/CD by breaking the process into stages, for example:

• Checkout — obtaining code from the repository
• Build — building the project
• Test — running tests
• Deploy — deploying to the server

An example of a simple Jenkinsfile:

pipeline {
    agent any
    stages {
        stage('Checkout') {
            steps {
                git 'https://github.com/example/repo.git'
            }
        }
        stage('Build') {
            steps {
                sh './gradlew build'
            }
        }
        stage('Test') {
            steps {
                sh './gradlew test'
            }
        }
        stage('Deploy') {
            steps {
                sh './deploy.sh'
            }
        }
    }
}

I wrote pipelines to automate building and testing microservices, integrate with Docker and Kubernetes, as well as for automatic deployment to staging and production environments with notifications in Slack.