Both my servers are caught up to block 20410475. The _data/steem on the most recent server shows as 437G and the _data/steem on my other server (the one I suspect to be wrong) shows as 377G. it would be nice if your server was at 437G around block 20410475 too, but I'm thinking you probably aren't because you were at 419G four days ago.
RE: SBDS to MySQL in Docker