Fix for empty startupcommand (#13953) (#13965)

* Fix for empty startupcommand

* removing unwanted library

Author: AmrutaKawade

Tasks/AzureRmWebAppDeploymentV3/operations/ContainerBasedDeploymentUtility.ts

@@ -44,10 +44,11 @@ export class ContainerBasedDeploymentUtility {
         var startupCommand: string = taskParameters.StartupCommand;
         var configSettingsParameters = taskParameters.ConfigurationSettings;
         var appSettingsNewProperties = !!configSettingsParameters ? parse(configSettingsParameters.trim()): { };
-        appSettingsNewProperties.appCommandLine = {
-            'value': startupCommand
+        if(!!startupCommand) {
+            appSettingsNewProperties.appCommandLine = {
+                'value': startupCommand
+            }
         }
-
         appSettingsNewProperties.linuxFxVersion = {
             'value': "DOCKER|" + imageName
         }

Tasks/AzureRmWebAppDeploymentV3/task.json

@@ -17,7 +17,7 @@
     "author": "Microsoft Corporation",
     "version": {
         "Major": 3,
-        "Minor": 178,
+        "Minor": 179,
         "Patch": 0
     },
     "releaseNotes": "What's new in Version 3.0: <br/>&nbsp;&nbsp;Supports File Transformations (XDT) <br/>&nbsp;&nbsp;Supports Variable Substitutions(XML, JSON) <br/>Click [here](https://aka.ms/azurermwebdeployreadme) for more information.",

Tasks/AzureRmWebAppDeploymentV3/task.loc.json

@@ -17,7 +17,7 @@
   "author": "Microsoft Corporation",
   "version": {
     "Major": 3,
-    "Minor": 178,
+    "Minor": 179,
     "Patch": 0
   },
   "releaseNotes": "ms-resource:loc.releaseNotes",