Optimized images and version configuration for dockerfiles

tests/integration/test_deprecated_version_key.py

@@ -0,0 +1,49 @@
+import unittest
+from pathlib import Path
+import yaml
+
+class TestDeprecatedVersionKey(unittest.TestCase):
+    def test_version_key_deprecation(self):
+        """
+        Checks all roles/docker-*/vars/configuration.yml for deprecated use of 'version'.
+        Warns if 'version' is set but 'images' is missing.
+        Prints warnings but does NOT fail the test.
+        """
+        repo_root = Path(__file__).resolve().parent.parent.parent
+        roles_dir = repo_root / "roles"
+        warnings = []
+
+        for role_path in roles_dir.iterdir():
+            if not (role_path.is_dir() and role_path.name.startswith("docker-")):
+                continue
+
+            cfg_file = role_path / "vars" / "configuration.yml"
+            if not cfg_file.exists():
+                continue
+
+            try:
+                config = yaml.safe_load(cfg_file.read_text("utf-8")) or {}
+            except yaml.YAMLError as e:
+                print(f"YAML parse error in {cfg_file}: {e}")
+                continue
+
+            uses_version = 'version' in config
+            uses_images = 'images' in config
+
+            if uses_version and not uses_images:
+                warnings.append(
+                    f"[DEPRECATION WARNING] {role_path.name}/vars/configuration.yml: "
+                    f"'version:' is set, but 'images:' is missing. "
+                    f"'version' is deprecated and must only be set if 'images' is present."
+                )
+
+        if warnings:
+            print("\n".join(warnings))
+        else:
+            print("No deprecated 'version:' keys found in docker roles without 'images:'.")
+
+        # Never fail, just warn
+        self.assertTrue(True)
+
+if __name__ == "__main__":
+    unittest.main()