While trying to build the below Docker Image in Azure DevOps using the Microsoft hosted agent “windows-latest” or “windows-2019” getting below error

Docker file content is

# escape=`

FROM mcr.microsoft.com/dotnet/framework/sdk:4.8-windowsservercore-ltsc2019

# Install Powershell
RUN powershell -Command "Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope LocalMachine"

# Install Nuget package provider
RUN powershell -Command "Install-PackageProvider -Name NuGet -Force -Scope AllUsers"

WORKDIR /azp/

COPY ./start.ps1 ./

CMD powershell .start.ps1

Could anyone help with why a windows image is failing to build in windows agent?

Did tried changing the agent from “windows-latest” to “windows-2019” but of no help