We have identified a problem with the stable docker image when using auto update.
It impacted the passive scan rules - some of them may not have been installed correctly and would therefore not run.
It was a side effect of the ongoing work to move functionality from the core to add-ons. We've re-released the docker image and we believe the problem is resolved.
If you have had a problem with the stable docker image in the last couple of days then please try again, pulling the latest version.
If you have any problems then let us know asap.
We are also looking into adding additional checks so that we get alerted to any similar problems in the future.
Sorry about the inconvenience,
Simon