use conditional variables

azure-pipelines-release.yml

@@ -7,22 +7,17 @@ pool:
     - ImageOverride -equals MMS2022TLS
 
 variables:
-  PackageSuffix: ''
 
-steps:
+  - name: PackageSuffix
+    # if source branch is not `dev` then we're generating a release based on a feature branch
+    # In that case, we populate the environment variable "PackageSuffix" accordingly
+    ${{ if ne(variables['Build.SourceBranchName'], 'dev') }}:
+      value: 'pr.$(Build.BuildNumber)' # the "pr" section is to denote this code is a candidate to be PR'ed
+    ${{ else }}:
+      value: ''
 
-- task: PowerShell@2
-  displayName: 'Populate PackageSuffix iff source branch is not dev'
-  inputs:
-    targetType: 'inline'
-    script: |
-      # if source branch is not `dev` then we're generating a release based on a feature branch
-      # In that case, we populate the environment variable "PackageSuffix" accordingly
-      if($Env:BUILD_SOURCEBRANCHNAME -ne 'dev'){
-        # the "pr" section is to denote this code is a candidate to be PR'ed
-        $versionSuffix = "pr.$(Build.BuildNumber)"
-        Write-Host "##vso[task.setvariable variable=PackageSuffix;]$versionSuffix"
-      }
+
+steps:
 
 # Configure all the .NET SDK versions we need
 - task: UseDotNet@2