Error-Loop [T] AppPath, [T] AppWorkPath,

I set up latest gitea from dockerhub with connected postgresql database and everythink worked nicely - for two days…
Now gitea is stucked in infinite loop saying:

2018/08/29 08:22:39 [T] AppWorkPath: /app/gitea
2018/08/29 08:22:39 [T] Custom path: /data/gitea
2018/08/29 08:22:39 [T] Log path: /data/gitea/log
2018/08/29 08:22:41 [T] AppPath: /app/gitea/gitea
2018/08/29 08:22:41 [T] AppWorkPath: /app/gitea
2018/08/29 08:22:41 [T] Custom path: /data/gitea
2018/08/29 08:22:41 [T] Log path: /data/gitea/log
2018/08/29 08:22:42 [T] AppPath: /app/gitea/gitea
2018/08/29 08:22:42 [T] AppWorkPath: /app/gitea
2018/08/29 08:22:42 [T] Custom path: /data/gitea
2018/08/29 08:22:42 [T] Log path: /data/gitea/log

And database seems to work properly:

LOG:  database system was shut down at 2018-08-29 08:00:36 UTC
LOG:  MultiXact member wraparound protections are now enabled
LOG:  autovacuum launcher started
LOG:  database system is ready to accept connections
LOG:  could not receive data from client: Connection reset by peer

I even don’t know where to start looking for the error?!
And the two related issues (looking promising) I found:

weren’t that helpful at second glance…

Any ideas? Help or just a hint would be very nice!