Multi-architecture Jenkins Docker Builds with Docker manifest support

Jenkinsfile

pipeline {
    environment {
        registryCredential = 'harbor-lol-jenk-robot'
        DOCKER_IMAGE = sh 'echo ${JOB_NAME} | sed "s/gitea-larkspur//g" | sed "s/master//g"'
        registry = "" /*be sure to include trailing slash*/
        docker_image_name = "bgulla/rtl-tcp"
        docker_img =  "${registry}${docker_image_name}"

        /* */
        push_to_local_registry = true
        local_registry = "harbor.lol"
        local_registry_namespace = "dev"
    }
    //  agent any
    agent {
        label 'arm'
    }
    stages {
        stage('Build AMD64 Docker and Push to Registries') {
            agent {
                label 'amd64'
            }
            steps {
                script {
                    sh 'whoami'
                    sh 'env'
                    docker.withRegistry( '', 'dockerhub-creds' ) {
                        dockerImage = docker.build docker_img + ":amd64"
                        dockerImage.push()
                    }
                    if (push_to_local_registry){
                        docker.withRegistry( 'https://${local_registry}', 'harbor-lol-jenk-robot' ) {
                            local_registry_docker_image = "${local_registry_namespace}/${docker_img}"
                            sh "echo ${local_registry_docker_image}" 
                            dockerImage = docker.build local_registry_docker_image + ":amd64"
                            dockerImage.push()
                        }
                    }
                }
            }
        }

        stage('Build ARMv7 Docker and Push to Registries') {
            agent {
                label 'arm'
            }
            steps {
                script {
                    sh 'whoami'
                    sh 'env'
                    docker.withRegistry( '', 'dockerhub-creds' ) {
                        dockerImage = docker.build docker_img + ":armv7"
                        dockerImage.push()
                    }
                    if (push_to_local_registry){
                        docker.withRegistry( 'https://harbor.lol', 'harbor-lol-jenk-robot' ) {
                            local_registry_docker_image = "${local_registry}/${local_registry_namespace}/${docker_img}"
                            dockerImage = docker.build local_registry_docker_image + ":armv7"
                            dockerImage.push()
                        }
                    }
                }
            }
        }


        stage('Build ARM64 Docker and Push to Registries') {
            agent {
                label 'arm64'
            }
            steps {
                script {
                    sh 'whoami'
                    sh 'env'
                    docker.withRegistry( '', 'dockerhub-creds' ) {
                        dockerImage = docker.build docker_img + ":arm64"
                        dockerImage.push()
                    }
                    if (push_to_local_registry){
                        docker.withRegistry( 'https://harbor.lol', 'harbor-lol-jenk-robot' ) {
                            local_registry_docker_image = "${local_registry}/${local_registry_namespace}/${docker_img}"
                            dockerImage = docker.build local_registry_docker_image + ":arm64"
                            dockerImage.push()
                        }
                    }
                }
            }
        }

        stage('Build Docker Manifest and push') {
            agent {
                label 'amd64'
            }
            steps {
                script {
                    sh 'whoami'
                    sh 'env'
                    docker.withRegistry( '', 'dockerhub-creds' ) {
                        sh 'docker version'
                        sh "docker manifest create ${docker_img}:latest ${docker_img}:armv7 ${docker_img}:amd64 ${docker_img}:armv7 ${docker_img}:arm64"
                        sh "docker manifest push ${docker_img}:latest"
                    }
                }
            }
        }
    }
}