Hi @pluskal_4199,
Thanks for the information.
The FeedCleanup job is automatically scheduled and you can see the date and time by navigating to Administration -> Scheduled Jobs. Would you be able to tell me if the time that was automatically configured matches when you are seeing the timeout?
Our Docker image currently is running ProGet using mono which comes with its own subset of issues. I'm seeing the SNI_Error is a pretty common error with mono and we have seen mono has more trouble releasing connections than when running within the .NET Framework. The most annoying part of mono, is they don't always give us the most accurate and descriptive error messages. This could just be a similar exception to the max connection pool but based on DB transactions. We are currently in the process of migrating to .NET 5 and we will hopefully have an updated Docker image over the next couple of months. If you are interested, please keep an eye out for more information to come.
I would like to see some of these results on Windows-based installations also to help guide our solution.
Thanks,
Rich