Windows: add a toolchain image for 10.0.19044.1706 (21H2)

Add rules for building a docker image for the toolchain build at
10.0.19044.1706 (21H2).  As the base image for the release is not
available, use a slightly older release which should be compatible
to avoid any issues due to kernel mismatches (the newer image will
not run).  This allows building the toolchain in a docker image with
the latest stable release of Windows 10.

swift-ci/master/windows/10.0.19044.1706/Dockerfile

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+# escape=`
+
+# 10.0.19044.1706 is not yet published, use the 20H2 snapshot as that is
+# believed to work better than the newer image.
+FROM mcr.microsoft.com/windows/servercore:10.0.19042.1706 AS windows
+
+LABEL maintainer="Swift Infrastructure <[email protected]>"
+LABEL description="Docker Container for the Swift programming language"
+
+ARG GIT=https://github.com/git-for-windows/git/releases/download/v2.36.1.windows.1/Git-2.36.1-64-bit.exe
+ARG PYTHON=https://www.python.org/ftp/python/3.10.4/python-3.10.4-amd64.exe
+
+# restore the default Windows shell for correct batch processing
+SHELL ["cmd", "/S", "/C"]
+
+# Enable Developer Mode.
+RUN reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"
+
+# Enable Long Paths
+RUN reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem" /t REG_DWORD /f /v "LongPathsEnabled" /d "1"
+
+# Install Git.
+# See: git-[version]-[bit].exe /SAVEINF=git.inf and /?
+COPY git.inf .
+RUN                                                                             `
+  curl -SLo git.exe %GIT%                                                       `
+  && (start /w git.exe /SP- /VERYSILENT /SUPPRESSMSGBOXES /NOCANCEL /NORESTART /CLOSEAPPLICATIONS /FORCECLOSEAPPLICATIONS /LOADINF=git.inf ) `
+  && del /q git.exe git.inf
+
+# Install Python.
+# See: https://docs.python.org/3.10/using/windows.html
+# FIXME: it appears that `PYTHONHOME` and `PYTHONPATH` are unset
+COPY unattend.xml .
+RUN                                                                             `
+  curl -SLo python.exe %PYTHON%                                                 `
+  && (start /w python.exe /quiet )                                              `
+  && del /q python.exe unattend.xml
+
+# Install Visual Studio Build Tools
+RUN                                                                             `
+  curl -SLo vs_buildtools.exe https://aka.ms/vs/17/release/vs_buildtools.exe    `
+  && (start /w vs_buildtools.exe --quiet --wait --norestart --nocache           `
+        --add Microsoft.VisualStudio.Component.Windows11SDK.22000               `
+        --add Microsoft.VisualStudio.Component.VC.ATL                           `
+        --add Microsoft.VisualStudio.Component.VC.ATL.ARM                       `
+        --add Microsoft.VisualStudio.Component.VC.ATL.ARM64                     `
+        --add Microsoft.VisualStudio.Component.VC.CMake.Project                 `
+        --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64                 `
+        --add Microsoft.VisualStudio.Component.VC.Tools.ARM64                   `
+        --add Microsoft.VisualStudio.Component.VC.Tools.ARM                     `
+      || IF "%EXITCODE%"=="3010" EXIT 0)                                        `
+  && del /q vs_buildtools.exe
+COPY InstallModules.cmd .
+RUN InstallModules.cmd && del /q InstallModules.cmd
+
+# FIXME: we should use a non-Administrator user
+# USER ContainerUser
+
+ENV PYTHONUTF8=1
+# Default to powershell
+CMD ["powershell.exe", "-nologo", "-ExecutionPolicy", "Bypass"]

swift-ci/master/windows/10.0.19044.1706/InstallModules.cmd

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+@echo off
+setlocal
+set vswhere=%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe
+FOR /F "tokens=* usebackq" %%r IN (`"%vswhere%" -nologo -latest -all -prerelease -products * -property installationPath`) DO SET VsDevCmd=%%r\Common7\Tools\VsDevCmd.bat
+CALL "%VsDevCmd%" -no_logo -host_arch=amd64 -arch=amd64
+mklink "%UniversalCRTSdkDir%\Include\%UCRTVersion%\ucrt\module.modulemap" S:\SourceCache\swift\stdlib\public\Platform\ucrt.modulemap
+mklink "%UniversalCRTSdkDir%\Include\%UCRTVersion%\um\module.modulemap" S:\SourceCache\swift\stdlib\public\Platform\winsdk.modulemap
+mklink "%VCToolsInstallDir%\include\module.modulemap" S:\SourceCache\swift\stdlib\public\Platform\visualc.modulemap
+mklink "%VCToolsInstallDir%\include\visualc.apinotes" S:\SourceCache\swift\stdlib\public\Platform\visualc.apinotes
+endlocal
+@echo on

swift-ci/master/windows/10.0.19044.1706/git.inf

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+[Setup]
+NoIcons=1
+Components=gitlfs
+EditorOption=VIM
+PathOption=Cmd
+SSHOption=OpenSSH
+TurtoiseOption=false
+CURLOption=WinSSL
+BashTerminalOption=ConHost
+PerformanceTweaksFSCache=Enabled
+EnableSymlinks=Enabled
+EnablePseudoConsoltSupport=Disabled
+EnableFSMonitor=Enabled

swift-ci/master/windows/10.0.19044.1706/unattend.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<Options>
+  <Option Name="InstallAllUsers" Value="1" />
+  <Option Name="AssociateFiles" Value="0" />
+  <Option Name="PrependPath" Value="1" />
+  <Option Name="Shortcuts" Value="0" />
+  <Option Name="Include_doc" Value="0" />
+  <Option Name="Include_debug" Value="0" />
+  <Option Name="Include_dev" Value="1" />
+  <Option Name="Include_exe" Value="1" />
+  <Option Name="Include_launcher" Value="0" />
+  <Option Name="InstallLauncherAllUsers" Value="0" />
+  <Option Name="Include_lib" Value="1" />
+  <Option Name="Include_symbols" Value="0" />
+  <Option Name="Include_tcltk" Value="0" />
+  <Option Name="Include_test" Value="0" />
+  <Option Name="Include_tools" Value="0" />
+</Options>