fix telemetry issues

tests/test_telemetry.py

@@ -23,6 +23,14 @@ class TelemetrySigningTests(unittest.TestCase):
         self.assertEqual(len(expected), 64)
         self.assertEqual(expected, expected.lower())
 
+    def test_platform_data_marks_docker_runtime(self):
+        with patch.object(telemetry.os.path, "exists", side_effect=lambda path: path == "/.dockerenv"):
+            self.assertEqual(telemetry._platform_data()["runtime"], "CPython (Docker)")
+
+    def test_platform_data_keeps_python_runtime_outside_docker(self):
+        with patch.object(telemetry.os.path, "exists", return_value=False):
+            self.assertEqual(telemetry._platform_data()["runtime"], "CPython")
+
 
 class FakeResponse:
     status = 201