检查docker镜像是否存在

import hudson.model.*; def call(String imageName) { result = sh(script: "docker image ls '${imageName}:latest' |wc -l", returnStdout: true).trim() //int sokore = sh """docker image ls '${imageName}' |wc -l""" if ("${result}" == "2") { println "镜像：${imageName}:latest存在。" return true } else { println "镜像：${imageName}:latest不存在。" return false } }