Jenkins. Invalid agent type “docker” specified. Must be one of [any, label, none]

Jenkins is working with plugins, if you didn’t install Docker and Docker Pipeline plugins you can get this error. “Jenkins. Invalid agent type “docker” specified. Must be one of [any, label, none]”. You can fix this error with following steps;

Go to the

• Dashboard -> Manage Jenkins -> Manage Plugins -> Available tab
• Select Docker and Docker Pipeline from the list

• Then click Install, after restart, plugins should be available.

It is better to have docker installed also on your worker nodes.

Here you can find a sample declarative style pipeline to test your Jenkins.

pipeline {
    agent { docker { image 'maven:3.3.3' } }
    stages {
        stage('build') {
            steps {
                sh 'mvn --version'
            }
        }
    }
}