Using Powershell to set the BuildNumber in a json file

Set-BuildNumber.ps1

 Get-ChildItem configs -Filter appConfig*.json | % {  
    
    $fullName = $_.FullName
    write-output "Applying build number to $fileName"
    $fileContent = Get-Content $fullName 
    $replacedFileContent =  $fileContent.replace('BUILDNUMBER', $(Build.BuildNumber))
    Set-Content -Path $fullName -Value $replacedFileContent    	
    write-output "COMPLETED Applying build number to $fileName"
}