fix Jenkinsfile 4

Jenkinsfile

@@ -19,6 +19,7 @@ def build_docker(name, release_dir) {
 	}
 	return "\n - ${image_name}"
 }
+properties([[$class: 'BuildDiscarderProperty', strategy: [$class: 'LogRotator', artifactDaysToKeepStr: '', artifactNumToKeepStr: '10', daysToKeepStr: '', numToKeepStr: '20']], copyArtifactPermission('*')]);
 node {
 	stage("checkout") {
 		checkout scm
@@ -49,13 +50,4 @@ node {
 	archiveArtifacts 'release/*'
 	echo "${_msg}"
 }
-pipeline {
+
-	agent {
-		label 'master'
-	}
-	options {
-		copyArtifactPermission('*');
-		buildDiscarder(logRotator(numToKeepStr: "20", artifactNumToKeepStr: "10"))
-	}
-	stages {}
-}