title: Jenkins Pipeline-Copy artifact plugin- How to get build number of copied artifact
body: <p>While copying artifacts from another project, How can I get build number of copied artifact in Jenkins pipeline. </p>
  
  <p>For normal Jenkins job, env variable is set as <code>COPYARTIFACT_BUILD_NUMBER_${PROJECT_NAME}</code>, 
  similarly is there any way we can get build number in pipeline?</p>