fix copy plugin jar

Author: testforstephen

.azure-pipelines/nightly.yml

@@ -58,13 +58,11 @@ extends:
                   downloadType: specific
                   itemPattern: plugin/jars/com.microsoft.java.debug.plugin-*.jar
                   extractTars: false
-              - task: CmdLine@2
-                displayName: cp plugin.jar to server
+              - task: CopyFiles@2
+                displayName: "cp plugin.jar to server"
                 inputs:
-                  script: |-
-                    mkdir -p server
-
-                    copy $(System.ArtifactsDirectory)/plugin/jars/com.microsoft.java.debug.plugin-*[!a-zA-Z].jar server/
+                  Contents: "$(System.ArtifactsDirectory)/plugin/jars/com.microsoft.java.debug.plugin-*.jar"
+                  TargetFolder: server/
               - task: Npm@1
                 displayName: npm install
                 inputs: