!fixup: put on the mac section, and update the sign-assets.py script

RELEASE.md

@@ -285,6 +285,10 @@ Once we are confident that the release will be out shortly, and doesn't need any
   * You can verify the correct Python version is used with `poetry debug info`
 - [ ] Verify and checkout the git tag for this release
 - [ ] Run `poetry install --sync`
+- [ ] On the silicon mac, build the container image:
+  ```
+  python3 ./install/common/build-image.py
+  ```, and copy the `share/container.tar.gz` to the assets folder on `dangerzone-$VERSION-arm64.tar.gz`, along with the `share/image-id.txt` file.
 - [ ] Run `poetry run ./install/macos/build-app.py`; this will make `dist/Dangerzone.app`
 - [ ] Make sure that the build application works with the containerd graph
   driver (see [#933](https://github.com/freedomofpress/dangerzone/issues/933))

dev_scripts/sign-assets.py

@@ -11,7 +11,8 @@ log = logging.getLogger(__name__)
 
 
 DZ_ASSETS = [
-    "container.tar.gz",
+    "container-{version}-i686.tar.gz",
+    "container-{version}-arm64.tar.gz",
     "Dangerzone-{version}.msi",
     "Dangerzone-{version}-arm64.dmg",
     "Dangerzone-{version}-i686.dmg",