docker_image(_push): fix push detection (#1199) (#1200)

* Fix IP address retrieval for registry setup.

* Adjust push detection to Docker 29.

* Idempotency for export no longer works.

* Disable pull idempotency checks that play with architecture.

* Add more known image IDs.

* Adjust load tests.

* Adjust error message check.

* Allow for more digests.

* Make sure a new enough cryptography version is installed.

(cherry picked from commit d207643e0c)

plugins/modules/docker_image_export.py

@@ -29,7 +29,13 @@ attributes:
   diff_mode:
     support: none
   idempotent:
-    support: full
+    support: partial
+    details:
+      - Whether the module is idempotent depends on the storage API used for images,
+        which determines how the image ID is computed. The idempotency check needs
+        that the image ID equals the ID stored in archive's C(manifest.json).
+        This seemed to have worked fine with the default storage backend up to Docker 28,
+        but seems to have changed in Docker 29.
 
 options:
   names: