The error clearly reports that Virtuoso core dumped about 12mins after starting, the question is what causes it to crash ?
Was a core file created in the database directory ?
I also note you are running an old 07.20.3217 build from 2016, and would recommend updating to use the latest Virtuoso open source 07.20.3230 docker container …
You should also review the current virtuoso.log file to see if any errors are being reported there. Also, run an integrity check on the database on startup, and if the database does have any corruption, perform database recovery as detailed in the above document, or restore from backup which I would hope you have in place ?