Unity builder v4 Parity Update (#246)

- Updated activation strategy to align with builder strategy for more stable activation with retry logic
- Added `containerRegistryImageVersion` and `containerRegistryRepository` for improved custom image support
- Added `runAsHostUser` to fix self-hosted runner issues
- Scripts folder cleanup
- Added error/warning annotations for activation issues
- Improved serial masking
- Image environment factory addition and docker refactoring

src/model/input.test.ts

@@ -7,6 +7,19 @@ const mockedFsExistsSync = jest.spyOn(fs, 'existsSync');
 const mockedFsReadFileSync = jest.spyOn(fs, 'readFileSync');
 
 describe('Input', () => {
+  let originalEnvironment;
+
+  beforeEach(() => {
+    // Store original process.env
+    originalEnvironment = process.env;
+    process.env['UNITY_SERIAL'] = 'F4-1234-1234-1234';
+  });
+
+  afterEach(() => {
+    // Restore original process.env
+    process.env = originalEnvironment;
+  });
+
   describe('getFromUser', () => {
     it('does not throw', () => {
       expect(() => Input.getFromUser()).not.toThrow();