我使用 docker 容器中的 Jenkins。我想在 Jenkins 管道中构建 docker 镜像，但 docker 在这个容器(Jenkins 所在的位置)中不存在。

Docker Compose部署的Jenkins容器，yml文件:

version: "3.3"
services:
  jenkins:
    image: jenkins:alpine
    ports:
      - 8085:8080
    volumes:
      - ./FOR_JENKINS:/var/jenkins_home

我们可以做些什么来在 Jenkins 管道中构建 docker 镜像？ 我们可以使用 docker 部署一些 docker 容器并使用一次来构建 docker 镜像吗？或者是其他东西？你对他们怎么样？

编辑:

感谢@VonC，我检查了你的信息，但是...“权限被拒绝”

Docker 编写文件:

version: "3.3"
services:
  jenkins:
    image: jenkins:alpine
    ports:
      - 8085:8080
    volumes:
      - ./FOR_JENKINS:/var/jenkins_home
#      - /var/run/docker.sock:/var/run/docker.sock:rw
      - /var/run:/var/run:rw

Jenkins 文件:

pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                echo "Compiling..."
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt compile"
            }
        }
        /*stage('Unit Test') {
            steps {
                echo "Testing..."
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt coverage 'test-only * -- -F 4'"
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt coverageReport"
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt scalastyle || true"
            }
        }*/
        stage('DockerPublish') {
            steps {
                echo "Docker Stage ..."
                // Generate Jenkinsfile and prepare the artifact files.
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt docker:stage"

                echo "Docker Build-2 ..."
                // Run the Docker tool to build the image
                script {
                    docker.withTool('docker') {

                        echo "D1- ..."
                        //withDockerServer([credentialsId: "AWS-Jenkins-Build-Slave", uri: "tcp://192.168.0.29:2376"]) { 
                            echo "D2- ..."
                            sh "printenv" 
                            echo "D3- ..."
                            //sh "docker images" 
                            echo "D4- ..."
                            docker.build('my-app:latest', 'target/docker/stage').inside("--volume=/var/run/docker.sock:/var/run/docker.sock")
                            echo "D5- ..."
                            //base.push("tmp-fromjenkins") 
                        //}

                    }
                }
            }
        }
    }
}

结果:

[job1] Running shell script

+ docker build -t my-app:latest target/docker/stage

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.29/build?buildargs=%7B%7D&cachefrom=%5B%5D&cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&labels=%7B%7D&memory=0&memswap=0&networkmode=default&rm=1&shmsize=0&t=my-app%3Alatest&target=&ulimits=null: dial unix /var/run/docker.sock: connect: permission denied

script returned exit code 1

编辑: “权限被拒绝”的最后一个问题是:

>>sudo chmod 0777 /var/run/docker.sock

工作状态:

调用主机:

>>sudo chmod 0777 /var/run/docker.sock

Docker 编写文件:

version: "3.3"
services:
  jenkins:
    image: jenkins:alpine
    ports:
      - 8085:8080
    volumes:
      - ./FOR_JENKINS:/var/jenkins_home
#      - /var/run/docker.sock:/var/run/docker.sock:rw
      - /var/run:/var/run:rw

Jenkins 文件:

pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                echo "Compiling..."
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt compile"
            }
        }
        /*stage('Unit Test') {
            steps {
                echo "Testing..."
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt coverage 'test-only * -- -F 4'"
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt coverageReport"
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt scalastyle || true"
            }
        }*/
        stage('DockerPublish') {
            steps {
                echo "Docker Stage ..."
                // Generate Jenkinsfile and prepare the artifact files.
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt docker:stage"

                echo "Docker Build-2 ..."
                // Run the Docker tool to build the image
                script {
                    docker.withTool('docker') {

                        echo "D1- ..."
                        //withDockerServer([credentialsId: "AWS-Jenkins-Build-Slave", uri: "tcp://192.168.0.29:2376"]) { 
                            echo "D2- ..."
                            sh "printenv" 
                            echo "D3- ..."
                            //sh "docker images" 
                            echo "D4- ..."
                            docker.build('my-app:latest', 'target/docker/stage')
                            echo "D5- ..."
                            //base.push("tmp-fromjenkins") 
                        //}

                    }
                }
            }
        }
    }
}

我的决心:

我在 Jenkinsfile 中添加了一些步骤并得到:

pipeline {
    agent any
    //def app

    stages {
        stage('Build') {
            steps {
                echo "Compiling..."
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt compile"
            }
        }

        stage('DockerPublish') {
            steps {
                echo "Docker Stage ..."
                // Generate Jenkinsfile and prepare the artifact files.
                sh "${tool name: 'sbt', type: 'org.jvnet.hudson.plugins.SbtPluginBuilder$SbtInstallation'}/bin/sbt docker:stage"

                echo "Docker Build ..."
                // Run the Docker tool to build the image
                script {
                    docker.withTool('docker') {

                            echo "Environment:"
                            sh "printenv" 
                            app = docker.build('ivanbuh/myservice:latest', 'target/docker/stage')
                            echo "Push to Docker repository ..."
                         docker.withRegistry('https://registry.hub.docker.com', 'docker-hub-credentials') {  
                                app.push("${env.BUILD_NUMBER}")
                                app.push("latest")
                            }

                            echo "Complated ..."
                    }
                }
            }
        }
//https://boxboat.com/2017/05/30/jenkins-blue-ocean-pipeline/
//https://gist.github.com/bvis/68f3ab6946134f7379c80f1a9132057a
        stage ('Deploy') {
            steps {
                sh "docker stack deploy myservice --compose-file docker-compose.yml"
            }
        }
    }
}

最佳答案

您可以查看“Docker in Docker in Jenkins pipeline”。它包括步骤:

inside the Jenkinsfile, I need to connect my build container to the outer Docker instance. This is done by mounting the Docker socket itself:

docker.build('my-build-image').inside("--volume=/var/run/docker.sock:/var/run/docker.sock") {  
   // The build here
}

您可以在“Building containers with Docker in Docker and Jenkins”中看到类似的方法。

In order to make the Docker from the host system available I need to make the API available to the Jenkins docker container. You can do this by mapping the docker socket that is available on the parent system.
I have created a small docker-compose file where I map both my volumes and the docker socket as following:

jenkins:
  container_name: jenkins
  image: myjenkins:latest
  ports:
    - "8080:8080"
  volumes:
    - /Users/devuser/dev/docker/volumes/jenkins:/var/jenkins_home
    - /var/run:/var/run:rw

Please note the special mapping the ‘/var/run’ with rw privileges, this is needed to make sure the Jenkins container has access to the host systems docker.sock.

而且，正如我 mentioned before ，您可能需要以特权模式运行 docker。
或者，正如 OP 报告的那样:

sudo chmod 0777 /var/run/docker.sock

关于docker - 在 Jenkins(在 docker 容器中)管道中构建 docker 镜像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46759710/