def dockerImage
def dockerTag = 'whateverImageName'

$BUILD_NUMBER
pipeline {

  environment {
    registry = "736289p4.gra5.container-registry.ovh.net"
    registryCredential = 'harbor'
  }

  agent any

  stages {
    stage('Building image') {
      steps {
        script {
          dockerImage = docker.build(dockerTag)
        }
      }
    }
    stage('Deploy Image') {
      steps{
        script {
          docker.withRegistry( 'https://736289p4.gra5.container-registry.ovh.net', registryCredential ) {
            dockerImage.push($BUILD_NUMBER)
            dockerImage.push("latest")
          }
        }
      }
    }
  }
}