Improvements to Jenkinsfile structure to publish image

def dockerImage

pipeline {

    agent none

  environment {

    imagename = "opensourcemano/api-fe"

    registryCredential = '<credentials>'  // To be updated with actual ID in the future

  }

  agent any

  stages {

/*      stage('Test') {

          agent { dockerfile true }

    stage('Build API-FE image') {

      steps{

                sh 'echo HOLA'

        sh "echo Building API-FE image"

        script {

          dockerImage = docker.build "${env.imagename}:${env.BUILD_NUMBER}"

        }

      }

*/

        stage('Build') {

            agent any

    }

    stage('Upload to Docker registry') {

      steps{

        sh "echo Here it would upload the image with appropriate tags: build number, latest"

        /*script {

          docker.withRegistry( '', registryCredential ) {

            dockerImage.push("${env.BUILD_NUMBER}")

            dockerImage.push('latest')

          }

        }*/

      }

    }

    stage('Remove unused Docker image') {

      steps{

                sh 'docker build .'

                sh 'echo PUBLISH'

        sh "docker rmi ${imagename}:${BUILD_NUMBER}"

        // Commented until "upload" stage can be uncommented as well

        //sh "docker rmi ${imagename}:latest"

      }

    }

  }