fix: honor admin internal api toggle

tests/test_tinode_config_template.py

@@ -0,0 +1,17 @@
+from pathlib import Path
+import unittest
+
+
+TEMPLATE = Path(__file__).resolve().parents[1] / "docker/tinode/config.template"
+
+
+class TinodeConfigTemplateTest(unittest.TestCase):
+    def test_admin_internal_api_enabled_comes_from_environment(self):
+        template = TEMPLATE.read_text(encoding="utf-8")
+        section = template.split('"admin_internal_api": {', 1)[1].split("},", 1)[0]
+
+        self.assertIn('"enabled": $ADMIN_INTERNAL_API_ENABLED', section)
+
+
+if __name__ == "__main__":
+    unittest.main()