Increase Rakefile compatibility (#1155)

* made Rakefile compatible with Powershell

* Cleaned up changes

Author: Bubballoo3

Rakefile

@@ -5,7 +5,9 @@ end
 
 desc "Build docs using docker"
 task :build do
-  exec "#{run_cmd} make html"
+  cmd = "#{run_cmd} make html"
+  puts cmd
+  exec cmd
 end
 
 desc "Spellcheck"
@@ -15,7 +17,11 @@ end
 
 desc "Open built documentation in browser"
 task :open do
-  exec '(command -v xdg-open >/dev/null 2>&1 && xdg-open build/html/index.html) || open build/html/index.html'
+  if windows?
+    system 'start .\build\html\index.html'
+  else
+    exec '(command -v xdg-open >/dev/null 2>&1 && xdg-open build/html/index.html) || open build/html/index.html'
+  end
 end
 
 def user_group
@@ -28,20 +34,28 @@ def image
 end
 
 def docker?
-  `which docker 2>/dev/null 2>&1`
-  $?.success?
+  exists? 'docker'
 end
 
 def podman?
-  `which podman 2>/dev/null 2>&1`
+  exists? 'podman'
+end
+
+def exists?(program)  
+  `#{program} -v 2>/dev/null 2>&1`
   $?.success?
 end
 
+def windows?
+  Gem.win_platform?
+end
+
 def run_cmd
   if podman?
     "podman run --rm -it -v #{__dir__}:/doc #{image}"
   elsif docker?
-    "docker run --rm -it -v '#{__dir__}:/doc' -u '#{user_group}' #{image}"
+    user_section = windows? ? nil : "-u '#{user_group}'"
+    "docker run --rm -it -v \"#{__dir__}:/doc\" #{user_section} #{image}"
   else
     raise StandardError, "Cannot find any suitable container runtime to build. Need 'podman' or 'docker' installed."
   end