Parity Fixes with Test Runner (QOL Changes) (#607)

* Fix missed directory change that isn't used anymore

* Fixes, improvements, and cleanup while reconciling test runner scripts

* Additional cleanup

* Fix possible hang

* Don't mislead with activation server on windows

* Update node version

dist/index.js

@@ -5916,6 +5916,9 @@ class Docker {
                 break;
             case 'win32':
                 runCommand = this.getWindowsCommand(image, parameters);
+                break;
+            default:
+                throw new Error(`Operation system, ${process.platform}, is not supported yet.`);
         }
         options.silent = silent;
         options.ignoreReturnCode = true;
@@ -6487,7 +6490,7 @@ class ImageTag {
         const { image, tag, customImage } = this;
         if (customImage)
             return customImage;
-        return `${image}:${tag}`; // '0' here represents the docker repo version
+        return `${image}:${tag}`;
     }
 }
 exports["default"] = ImageTag;