project = "alpine"
repo = "zknt"
version = "3.10.2"
registry = "reg.zknt.org"
registry_credentials = "6ff44976-23cd-4cc2-902c-de8c340e65e5" 

pipeline {
  agent any
  stages {
    stage('Build image') {
      steps {
        withDockerRegistry([ credentialsId: registry_credentials, url: "https://"+registry ]) {
          echo 'Starting to build docker image'
          script {
            def customImage = docker.build(registry+'/'+repo+'/'+project, "--build-arg VERSION=$version .")
            customImage.push(version)
            customImage.push(version.split(/\./)[0,1].join('.'))
            customImage.push(version.split(/\./)[0])
            customImage.push("latest")
          }
        }
      }
    }
  }

  post {
    always {
      emailext body: 'build finished', subject: '[jenkins] docker '+project+': ' + currentBuild.result, to: 'cg@zknt.org', from: 'sysadm@zknt.org', attachLog: true
    }
  }
}