When doing daily/test build in a non-release branch use the branch name as the preview name (#6355)

tools/releaseBuild/setReleaseTag.ps1

@@ -10,13 +10,36 @@ param(
 )
 
 # Script to set the release tag based on the branch name if it is not set or it is "fromBranch"
-# the branch name is expected to be release-<semver>
+# the branch name is expected to be release-<semver> or <previewname>
 # VSTS passes it as 'refs/heads/release-v6.0.2'
 
+$branchOnly = $Branch -replace '^refs/heads/';
+
 if($ReleaseTag -eq 'fromBranch' -or !$ReleaseTag)
 {
-   $releaseTag = $Branch -replace '^.*(release-)'
-   $vstsCommandString = "vso[task.setvariable variable=$Variable]$releaseTag"
-   Write-Verbose -Message "setting $Variable to $releaseTag" -Verbose
-   Write-Host -Object "##$vstsCommandString"
+    # Branch is named release-<semver>
+    if($Branch -match '^.*(release-)')
+    {
+        $releaseTag = $branchOnly -replace '^.*(release-)'
+        $vstsCommandString = "vso[task.setvariable variable=$Variable]$releaseTag"
+        Write-Verbose -Message "setting $Variable to $releaseTag" -Verbose
+        Write-Host -Object "##$vstsCommandString"
+    }
+    else
+    {
+        # Branch is named <previewname>
+        # Get version from metadata and append -<previewname>
+        $metaDataJsonPath = Join-Path $PSScriptRoot -ChildPath '..\metadata.json'
+        $metadata = Get-content $metaDataJsonPath | ConvertFrom-Json
+        $versionPart = $metadata.NextReleaseTag
+        if($versionPart -match '-.*$')
+        {
+            $versionPart = $versionPart -replace '-.*$'
+        }
+
+        $releaseTag = "$versionPart-$branchOnly"
+        $vstsCommandString = "vso[task.setvariable variable=$Variable]$releaseTag"
+        Write-Verbose -Message "setting $Variable to $releaseTag" -Verbose
+        Write-Host -Object "##$vstsCommandString"
+    }
 }