Ever since 2023.7.0 when HomeAssistant announced:
Blockquote
If you use the Home Assistant Container installation method, for example, using Docker, please make sure you are using our official (multi-platform) images.
The correct and preferred image to use for our stable releases is:
ghcr.io/home-assistant/home-assistant:stable
Although not the preferred location by the Home Assistant project, the image is also available on DockerHub:
homeassistant/home-assistant:stable
The update notification in Synology’s new Container Manager (f/k/a Docker) stopped notifying of the arrival of updates. I am on 2023.7.2 and it will not notify me of the existence of 2023.7.3.