add the environment variable information

Author: mumian

articles/azure-resource-manager/templates/deployment-script-template.md

@@ -5,7 +5,7 @@ services: azure-resource-manager
 author: mumian
 ms.service: azure-resource-manager
 ms.topic: conceptual
-ms.date: 02/24/2020
+ms.date: 03/03/2020
 ms.author: jgao
 
 ---
@@ -217,11 +217,17 @@ Deployment script outputs must be saved in the AZ_SCRIPTS_OUTPUT_PATH location,
 
 [jq](https://stedolan.github.io/jq/) is used in the previous sample. It comes with the container images. See [Configure development environment](#configure-development-environment).
 
-## Handle non-terminating errors
+## Develop deployment scripts
+
+### Handle non-terminating errors
 
 You can control how PowerShell responds to non-terminating errors by using the [**$ErrorActionPreference**](/powershell/module/microsoft.powershell.core/about/about_preference_variables?view=powershell-7#erroractionpreference
 ) variable in your deployment script. The deployment script engine doesn't set/change the value.  Despite the value you set for $ErrorActionPreference, deployment script sets the resource provisioning state to *Failed* when the script encounters an error.
 
+### Pass secure string to deployment script
+
+Setting environment variables in your container instances allows you to provide dynamic configuration of the application or script run by the container. Deployment script handles regular and secured environment variables in the same way as Azure Container Instance. For more information, see [Set environment variables in container instances](../container-instances/container-instances-environment-variables#secure-values.md).
+
 ## Debug deployment scripts
 
 The script service creates a [storage account](../../storage/common/storage-account-overview.md) and a [container instance](../../container-instances/container-instances-overview.md) for script execution. Both resources have the **azscripts** suffix in the resource names.