Convert-to: Requesting address is denied: collabora, docker nextcloud 20, best way to connect collabora in docker environment

Hello all,

I did a docker installation of nextcloud 20 with collabora. When I add the collabora container in settings I get

convert-to: Requesting address is denied:

I found some hints about this topic but nothing is helping me. I get always a blank page.
Im using collabora without ssl and only ip4. With ssl Im getting an error in firefox with untrusted cert.
After updating nextcloud yesterday I got a new network. Setting host allow with specific ip-range in compose file is not really a good idea…

How can I connect collabora to nextcloud in docker environment?

the compose:

44 image: collabora/code
45 restart: always
46 ports:
47 - 9981:9980
48 cap_add:
49 - MKNOD
50 environment:
51 - username=admin
52 - password=xxxx
55 - extra_params=–o:ssl.enable=false --o:net.proto=IPv4[0->9]{1,3}.[0-9]{1,3}[0-9]{1,3}.[0-9]{1,3}>

What is the best way to connect?
Can someone help?


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