This code snippet to a MsBuild Publish within an Helix style solution

AzurePipeline-MsBuildPublish.ps1

Write-Host  $Env:BUILD_SOURCESDIRECTORY

$foundationPath = Join-Path -Path $Env:BUILD_SOURCESDIRECTORY -ChildPath "Website/src/Foundation"
Write-Host  "found path $foundationPath"

$featurePath = Join-Path -Path $Env:BUILD_SOURCESDIRECTORY -ChildPath "Website/src/Feature"
Write-Host  "found path $featurePath"

$projectPath = Join-Path -Path $Env:BUILD_SOURCESDIRECTORY -ChildPath "Website/src/Project"
Write-Host  "found path $projectPath"

$tempOutputfolder = Join-Path -Path $Env:BUILD_SOURCESDIRECTORY -ChildPath "Website/temp" 

Write-Host  "Temp fold $tempOutputfolder"
$msBuildExe =  "C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\Bin\msbuild.exe"

Write-Host "Trying to get build file $msBuildExe"
Write-Host "Trying to build into $Env:BUILD_ARTIFACTSTAGINGDIRECTORY "
Write-Host "Trying to get build dir $Env:AGENT_BUILDDIRECTORY"

 if ((Test-Path $foundationPath) -eq $True) {
	$foundationProjects = Get-ChildItem $foundationPath -Recurse -Include *.csproj
	foreach ($projectFile in $foundationProjects) {
	if ($projectFile -notlike "*Tests*")
		 {
		 Write-Host "Foundation  $projectFile "   
    #$testproj = $projectFile
	
	    & "$($msBuildExe)" "$($projectFile)" /m /nr:false /p:DeployOnBuild=true /p:DeployDefaultTarget=WebPublish /p:WebPublishMethod=FileSystem /p:Configuration=release /p:PublishUrl=$tempOutputfolder   

		#& "$($msBuildExe)" "$($projectFile)" /m /nr:false /p:DeployOnBuild=true /p:DeployDefaultTarget=WebPublish /p:WebPublishMethod=FileSystem /p:Configuration=debug /p:PublishUrl=$publishTarget -v:q -nologo -clp:NoSummary > null
		#if ($LastExitCode -ne 0) {
		#	Write-Host "Build failed for" $projectFile -foregroundcolor Magenta
		#	exit
		#}
		}
	}
}


if ((Test-Path $featurePath) -eq $True) {
	$featureProjects = Get-ChildItem $featurePath -Recurse -Include *.csproj
	foreach ($projectFile in $featureProjects) {
	if ($projectFile -notlike "*Tests*")
		 {
		 Write-Host "Feature  $projectFile "   
     
	    & "$($msBuildExe)" "$($projectFile)" /m /nr:false /p:DeployOnBuild=true /p:DeployDefaultTarget=WebPublish /p:WebPublishMethod=FileSystem /p:Configuration=release /p:PublishUrl=$tempOutputfolder   

		#& "$($msBuildExe)" "$($projectFile)" /m /nr:false /p:DeployOnBuild=true /p:DeployDefaultTarget=WebPublish /p:WebPublishMethod=FileSystem /p:Configuration=debug /p:PublishUrl=$publishTarget -v:q -nologo -clp:NoSummary > null
		#if ($LastExitCode -ne 0) {
		#	Write-Host "Build failed for" $projectFile -foregroundcolor Magenta
		#	exit
		#}
		}
	}
}


if ((Test-Path $projectPath) -eq $True) {
	$projectPathProjects = Get-ChildItem $projectPath -Recurse -Include *.csproj
	foreach ($projectFile in $projectPathProjects) {
	if ($projectFile -notlike "*Tests*")
		 {
		 Write-Host "Project  $projectFile "   
     
	    & "$($msBuildExe)" "$($projectFile)" /m /nr:false /p:DeployOnBuild=true /p:DeployDefaultTarget=WebPublish /p:WebPublishMethod=FileSystem /p:Configuration=release /p:PublishUrl=$tempOutputfolder   

		#& "$($msBuildExe)" "$($projectFile)" /m /nr:false /p:DeployOnBuild=true /p:DeployDefaultTarget=WebPublish /p:WebPublishMethod=FileSystem /p:Configuration=debug /p:PublishUrl=$publishTarget -v:q -nologo -clp:NoSummary > null
		#if ($LastExitCode -ne 0) {
		#	Write-Host "Build failed for" $projectFile -foregroundcolor Magenta
		#	exit
		#}
		}
	}
}