improvement(windows): check for Hyper-V and ask if user wants Docker

Allows installation on machines without Hyper-V option, and avoids hard
requirement on Docker.

docs/basics/installation.md

@@ -49,7 +49,11 @@ To later upgrade to the newest version, simply run `brew update` and then `brew
 
 ### Windows
 
-You can run Garden on Windows 10 Pro or Enterprise editions (the Home edition unfortunately does not work because it does not include support for virtualization).
+You can run Garden on Windows 10 Home, Pro or Enterprise editions.
+
+_Note: The Home edition doesn't support virtualization, but you can still use Garden if you're working with
+[remote clusters](../using-garden/remote-clusters.md) and
+[in-cluster building](../using-garden/in-cluster-building.md)._
 
 To install the Garden CLI and its dependencies, please use our installation script. To run the script, open PowerShell as an administrator and run:
 
@@ -60,10 +64,11 @@ Set-ExecutionPolicy Bypass -Scope Process -Force; iex ((New-Object System.Net.We
 The things the script will check for are the following:
 
 * The [Chocolatey](https://chocolatey.org) package manager. The script installs it automatically if necessary.
-* _git_, _rsync_ and _Docker for Windows_. The script will install or upgrade those via Chocolatey.
-* Whether you have Hyper-V enabled. This is required for _Docker for Windows_. If you do not already have it enabled,
-  the script will enable it, but you will need to restart your computer before starting Docker for Windows.
-* Whether you have Kubernetes enabled in your _Docker for Windows_ installation.
+* _git_ and _rsync_ . The script will install or upgrade those via Chocolatey.
+* Whether you have Hyper-V available and enabled. This is required for _Docker for Windows_. If it's available, the
+  installer will ask if you'd like to install _Docker for Windows_. If you do not already have it enabled,
+  the script will enable it, but you will need to restart your computer before starting Docker.
+* If applicable, whether Kubernetes is enabled in your _Docker for Windows_ installation.
 
 To later upgrade to the newest version, simply re-run the above script.
 

support/install.ps1

@@ -14,6 +14,15 @@
 # For more information visit https://docs.garden.io/
 
 Function CheckHyperV {
+    $hyperv = Get-WindowsOptionalFeature -FeatureName Microsoft-Hyper-V-All -Online
+    if($hyperv) {
+        return $true
+    } else {
+        return $false
+    }
+}
+
+Function EnableHyperV {
     # if ((New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator) -eq $false) {
     #     ContinueYN("To check whether Hyper-V is enabled (and enable it if necessary), please run as Administrator. If you choose to continue the Hyper-V check will be skipped.")
     #     return
@@ -102,9 +111,17 @@ choco upgrade -y git rsync docker-for-windows
 
 [Console]::ResetColor()
 
-# Check system configuration
-CheckHyperV
-CheckKubernetes
+if (CheckHyperV) {
+    Write-Host "Hyper-V is available. Would you like to install Docker for Windows? (y/n)"
+    $response = Read-Host
+    if ( $response -eq "y" ) {
+        EnableHyperV
+        choco upgrade -y docker-for-windows
+        CheckKubernetes
+    }
+} else {
+    Write-Host "Hyper-V is NOT available. Docker for Windows is not available on this machine." -ForegroundColor Yellow
+}
 
 # Install the garden binary
 $homedir = Resolve-Path "~"
@@ -177,5 +194,5 @@ You can now run the garden command in your shell (you may need to restart your s
 Please head over to https://docs.garden.io for more information on how to get started.
 
 Note: Please see the logs above for any warnings. If Docker for Windows was just installed and/or
-      Hyper-V was just enabled, you may need to restart your computer before using Docker and Garden.
+      Hyper-V was just enabled, you may need to restart your computer before using Docker.
 ")