Download & install VS Buildtools in Dockerfile

Dockerfile

###
# https://docs.microsoft.com/en-us/visualstudio/install/build-tools-container?view=vs-2019
###

# escape=`

# Use the latest Windows Server Core image with .NET Framework 4.8.
FROM mcr.microsoft.com/dotnet/framework/sdk:4.8-windowsservercore-ltsc2019

# Restore the default Windows shell for correct batch processing.
SHELL ["cmd", "/S", "/C"]

# Download the Build Tools bootstrapper.
ADD https://aka.ms/vs/16/release/vs_buildtools.exe C:\TEMP\vs_buildtools.exe

# Install Build Tools with the Microsoft.VisualStudio.Workload.AzureBuildTools workload, excluding workloads and components with known issues.
RUN C:\TEMP\vs_buildtools.exe --quiet --wait --norestart --nocache `
    --installPath C:\BuildTools `
    --add Microsoft.VisualStudio.Workload.AzureBuildTools `
    --remove Microsoft.VisualStudio.Component.Windows10SDK.10240 `
    --remove Microsoft.VisualStudio.Component.Windows10SDK.10586 `
    --remove Microsoft.VisualStudio.Component.Windows10SDK.14393 `
    --remove Microsoft.VisualStudio.Component.Windows81SDK `
 || IF "%ERRORLEVEL%"=="3010" EXIT 0

# Define the entry point for the docker container.
# This entry point starts the developer command prompt and launches the PowerShell shell.
ENTRYPOINT ["C:\\BuildTools\\Common7\\Tools\\VsDevCmd.bat", "&&", "powershell.exe", "-NoLogo", "-ExecutionPolicy", "Bypass"]