pipeline {
         agent any
         stages {

                 stage('Checkout') {
                 steps {
                     echo 'Retrieving Jenkinsfile from the github repository.'
                   checkout([$class: 'GitSCM',branches: [[name: '*/master']],doGenerateSubmoduleConfigurations: false,extensions: [[$class: 'LocalBranch',localBranch: 'dummy']],submoduleCfg: [],userRemoteConfigs: [[url: 'https://github.com/humblemetsuke/coursework_2']]])
                 }
                 }

        stage('Sonarqube') {
    environment {
        scannerHome = tool 'Sonarqube'
    }
    steps {
        withSonarqubeEnv('Sonarqube') {
            sh "${scannerHome}/bin/sonar-scanner"
        }
        timeout(time: 1,unit: 'HOURS') {
            waitForQualityGate abortPipeline: true
        }
    }
}

stage ('build docker image') {

steps {
echo 'Beginning to build the docker image.'

script {

 dockerImage= docker.build("coursework_2:${env.BUILD_ID}")

         }
}

}

stage ('push docker image to DockerHub') {

steps {
echo 'Beginning to push the built docker image to Dockerhub.'

script {

withDockerRegistry(credentialsId: 'e1984af9-1751-4825-883a-9194875c8f89',url: '') {


         }
         dockerImage.push()
}

}

}
}
}

我已附上我的Jenkins文件。每次运行它时，都会被告知：

denied: requested access to the resource is denied

我认为这可能是Docker登录问题。我故意输入了错误的凭据，并收到一条消息，提示用户名或密码不正确，因此能够消除该错误（并帮助确保登录成功不是误报）。但是，对于出了什么问题以及为什么我没有得到理想的结果，也就是将映像推送到Dockerhub，我一无所知。