pipeline {
    agent any
    environment { DOCS = '/var/www/docs' }
    options { buildDiscarder(logRotator(numToKeepStr: '3')) }
    stages {
        stage('Checkout') { steps { checkout scm } }
        stage('Deploy') {
            when { branch 'main' }
            steps { sh 'mkdir -p ${DOCS} && cp -r . ${DOCS}/' }
        }
    }
}