Dns failure

[Orybon]

Hi,

I run a collobora/code behind a traefik, the nextcloud is behind the same traefik. In the app of nextcloud i configured the url exposed by the traefik that redirects to the collabora container.

When i open the url of collabora in my browser i get the "OK" message, but when i try to open a document from nextcloud i get a DNS failure (see below). Any idea what could be wrong ? I'am surprised that the collabora container try to resolve the docker ip and moreover that it fails....

nextcloud-collabora | wsd-00029-00029 2019-06-15 18:14:05.705201 [ loolwsd ] INF WSD initialization complete: setting log-level to [warning] as configured.| wsd/LOOLWSD.cpp:3188
nextcloud-collabora | wsd-00029-00038 2019-06-15 18:14:27.504860 [ websrv_poll ] WRN Poco::Net::DNS::resolve("172.19.0.1") failed: DNS error: Temporary DNS error while resolving: 172.19.0.1| wsd/LOOLWSD.cpp:1997
nextcloud-collabora | wsd-00029-00043 2019-06-15 18:14:40.359435 [ docbroker_001 ] ERR #21: Wrote outgoing data -1 bytes. (EPIPE: Broken pipe)| ./net/Socket.hpp:1058
nextcloud-collabora | wsd-00029-00043 2019-06-15 18:14:40.360892 [ docbroker_001 ] WRN Client session [0004] not found to forward message: o12 signaturestatus: 0| wsd/DocumentBroker.cpp:1798