How to stop build through dockerfile when unit test failed (Dockerfile + .NET Framework + Nunit Test + Docker Window Container - asp.net

Question

I have to build stop when unit test fail through docker file. I am using .NET Framework (not Dot.Net Core). I have to write command either in power shell script or Docker file (if Unit test fail then build should be stop before execute next line of docker file.
.NET Framework 4.7.2
Docker Window container only
Unit test project (Nunit)
Asp.Net WebForms (old)
Nunit test runner
Steps,
I have create project for Unit test + WebForm + Class library.
I have created powershell script for run unit test project using Nunit test runner.
I have added path for script in docker file.
I have attached Docker file and power-shell script .
Docker file code here
`# escape=`
FROM mcr.microsoft.com/dotnet/framework/sdk:4.8-20200512-windowsservercore-ltsc2019
WORKDIR /src
COPY ./POC.Web/POC.Web.csproj ./POC.Web/
COPY ./POC.Entites/POC.Entites.csproj ./POC.Entites/
COPY ./POC.Business.Layer/POC.Business.Layer.csproj ./POC.Business.Layer/
COPY ./POC.UnitTests/POC.UnitTests.csproj ./POC.UnitTests/
COPY ./POC.UnitTests/packages.config ./POC.UnitTests/
COPY ./MttcPoc.sln .
RUN nuget restore MttcPoc.sln
COPY . .
RUN msbuild POC.UnitTests/POC.UnitTests.csproj /p:OutputPath=c:/out/tests
SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop';"]
# testResult variable using in shellscript to get the result of unit test
ENV testResult="Passed"
RUN nuget install NUnit.Runners
COPY ./startuptest.ps1 /
RUN /startuptest.ps1
#RUN IF $testResult == "Passed" EXIT 0 ELSE EXIT -1
RUN if [ "$testResult" = "Passed" ] ; then true ; else false; fi
ENTRYPOINT ["powershell", "/startuptest.ps1"]
#*****************************************************
#Below line should not execute if unit test fail
FROM mcr.microsoft.com/dotnet/framework/aspnet:4.8-20200512-windowsservercore-ltsc2019
ENV APP_ROOT=/inetpub/wwwroot `
CONNECTIONSTRINGS_CONFIG_MAP="" `
dockercomposeKey="From Docker file"
WORKDIR ${APP_ROOT}
RUN Import-Module WebAdministration; `
Set-ItemProperty -Path 'IIS:\AppPools\DefaultAppPool' -Name processModel.identityType -Value LocalSystem; `
New-WebApplication -Name 'app' -Site 'Default Web Site' -PhysicalPath $env:APP_ROOT
COPY ./startup.ps1 /
RUN /startup.ps1
#ENTRYPOINT ["powershell", "/startup.ps1"]
COPY --from=build c:/out/_PublishedWebsites/POC.Web ${APP_ROOT}
#************************************************************************`
Powershell script code here
$ProjectDir = "."
$OutDir = "$ProjectDir\testresults"
$testProjectPath = "c:\out\tests\POC.UnitTests.dll"
# Set nunit path test runner
$nunit_path = "$ProjectDir\NUnit.ConsoleRunner.3.11.1\tools\nunit3-console.exe"
# Run NUnit3 tests
& $nunit_path $testProjectPath --framework=net-4.7.2 --work=$OutDir
[XML]$resultDetails = Get-Content .\$OutDir\TestResult.xml
Write-Output $resultDetails
$string = "test-run"
Write-Output $resultDetails.$string.result
$env:testResult = $resultDetails.$string.result
#Passed
#Failed
#Below line added for if test fail then exit from docker build
If ($resultDetails.$string.result -eq 'Passed') {
Write-Output "Test passed"
Write-Output $env:testResult
return true
}else{
Write-Output "Test failed"
Write-Output $env:testResult
return -1
}