declarative pipelines require all wor to be in script block

vars/declarativeFunctions.groovy

@@ -1,11 +1,11 @@
 #!groovy
 
 def pushArtifact (Map config) {
-    def ws = pwd()
     stage ("Push Artifact: " + config.fileName) {
         steps {
             container ("alpine") {
                 script {
+                    def ws = pwd()
                     sh "apk add --no-cache curl"
                     withCredentials([usernameColonPassword(
                         credentialsId: config.repoCreds,