Question

我正在使用Jenkins kubernetes-plugin。是否可以从Dockerfile构建Docker映像，然后在创建的映像中运行步骤？该插件需要在Pod模板中指定一个图像，所以我的第一个尝试是使用docker-in-docker，但是步骤docker.image('jenkins/jnlp-slave').inside() {..}失败了：

pipeline {
  agent {
    kubernetes {
      //cloud 'kubernetes'
      label 'mypod'
      yaml """
apiVersion: v1
kind: Pod
spec:
  containers:
  - name: docker
    image: docker:1.11
    command: ['cat']
    tty: true
    volumeMounts:
    - name: dockersock
      mountPath: /var/run/docker.sock
  volumes:
  - name: dockersock
    hostPath:
      path: /var/run/docker.sock
"""
    }
  }
  stages {
    stage('Build Docker image') {
      steps {
        git 'https://github.com/jenkinsci/docker-jnlp-slave.git'
        container('docker') {
          sh "docker build -t jenkins/jnlp-slave ."
          docker.image('jenkins/jnlp-slave').inside() {
            sh "whoami"
          }
        }
      }
    }
  }
}

失败：

WorkflowScript: 31: Expected a symbol @ line 31, column 11.
             docker.image('jenkins/jnlp-slave').inside() {

Answer 1

正如马特（Matt）在评论中指出的那样，该方法有效：

pipeline {
  agent {
    kubernetes {
      //cloud 'kubernetes'
      label 'mypod'
      yaml """
apiVersion: v1
kind: Pod
spec:
  containers:
  - name: docker
    image: docker:1.11
    command: ['cat']
    tty: true
    volumeMounts:
    - name: dockersock
      mountPath: /var/run/docker.sock
  volumes:
  - name: dockersock
    hostPath:
      path: /var/run/docker.sock
"""
    }
  }
  stages {
    stage('Build Docker image') {
      steps {
        git 'https://github.com/jenkinsci/docker-jnlp-slave.git'
        container('docker') {
          script {
            def image = docker.build('jenkins/jnlp-slave')
            image.inside() {
              sh "whoami"
            }
          }
        }
      }
    }
  }
}

Answer 2

 container('docker') {
        script {
        def image = docker.build("cusdock","CustomImage")
        image.inside(){
          sh "docker info"
        }
    }
 }

这里，CustomImage是git repo内部的目录，其中包含Dockerfile，它将构建您的自定义映像。该图像将被构建并标记为cusdock docker信息将在您的自定义docker映像中运行。

Jenkins Kubernetes插件：如何从Dockerfile构建映像并在映像中运行步骤

2 个答案: