Jenkins

pipeline generators and documentation can be found at ${YOUR_JENKINS_URL}/pipeline-syntax.

Run Jenkins stage only if specific dir changes:

stages {
  stage('Nginx') {
    when { changeset "nginx/*"}
    steps {
      sh "make build-nginx"
      sh "make start-nginx"
    }
  }
}

Resources:

Stack Overflow

Examples

run with specific Docker image:

pipeline {
  agent { docker { image 'golang' } }
  stages {
    stage('build') {
      steps {
        sh 'go version'
      }
    }
  }
}

checkout git repository:

pipeline {
  agent any
  stages {
    stage('hello') {
      checkout scm
      steps {
        sh 'echo hello'
      }
    }

    stage('welcome') {
      steps {
        echo 'welcome'
      }
    }

  }
}

Jenkinsfile examples:

Docker with bash scipts
scripted pipeline examples