Download Ruby setup to C: drive

CircleCI does not like if the current directory, where you want to check out the code, is not empty. Downloading the setup file to C: should fix that issue.

Author: andyundso

.circleci/config.yml

@@ -117,10 +117,10 @@ jobs:
             echo "Ruby Target Version Found: $target_version"
 
             [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
-            Invoke-WebRequest -UseBasicParsing -uri $download_uri -OutFile ruby-setup.exe
-            
+            Invoke-WebRequest -UseBasicParsing -uri $download_uri -OutFile C:\ruby-setup.exe
+
             echo "Download finished, starting installation of $target_version"
-            .\ruby-setup.exe /VERYSILENT /NORESTART /ALLUSERS /DIR=C:/Ruby<< parameters.ruby_version >>-x64
+            C:\ruby-setup.exe /VERYSILENT /NORESTART /ALLUSERS /DIR=C:/Ruby<< parameters.ruby_version >>-x64
 
       - run:
           name: ruby diagnostics