Minimal "run this command in this docker image" jenkinsfile-CodePudding

There is a docker image whose name is IMAGE_NAME.

I want a Jenkins job to docker pull IMAGE_NAME and then docker run IMAGE_NAME /bin/bash -c '/usr/bin/my_startup arg1 arg2 arg3

I tried a few variations of a Jenkinsfile based on some googled examples but they don't work and I clearly don't understand stages, agent, what environment the steps {sh '...'} command runs in, or any of the Jenkins jargon at all.

What's a minimal jenkinsfile which will pull IMAGE_NAME and run a command with arguments in it?

CodePudding user response：

minimal jenkinsfile

As long as this is not a "code golf" style question, the following pipeline will do the trick for you:

pipeline {
  agent any // modify as needed for an agent that supports container runtime

  stages {
    stage('Pull Image and Run Container') {
      script {
        // pulls image and then executes as container; note bonus example of arguments to container instantiation if needed
        docker.image('IMAGE_NAME').withRun('-e "env_var=env_value" -p 1234:5678') { container -> // container is lambda scope variable which you can reference as needed
          // execute startup
          sh(label: 'Startup', script: '/usr/bin/my_startup arg1 arg2 arg3')
        }
      }
    }
  }
}

If you have a private and/or custom registry, then you will need the withRegistry block and a registry credentials plugin setup on the Jenkins main server.

CodePudding user response：

This worked:

docker.image('MY_IMAGE').inside {
  sh '/bin/my-command my-args'
}

Apparently this is a Pipeline script, run in a Groovy sandbox in Jenkins 2.150.1.