The problem with a docker local logs driver, that it has only 5 files 20MiB each, so only 100MiB of logs, and likely it lost these lines already. You may increase the number of log files and/or their size, or redirect logs to the file to have a longer history. But in the latter case you also want to configure a logrotate to do not allow to grow it indefinitely:
The alternative method is to use an endpoint /mon/ps on the debug port, or use a simple naïve method of listing blobs folders by the access date (if you have enabled it) or this approach: