I installed Collabora, as package by apt install egroupware-collabora-key
Then I changed in docker-compose.yml the image with “collabora/code:latest” and re-create the container with docker-compose up -d
After that I log into EGroupware and go to Administration >> Application >> Collabora >> Site configuration, where the status is ok “74 type of documents supported” and saved the page.
Seems to be all right, but if I try to open for example a file .odt in filemanager the browser (brave and firefox tested) gives an error and it doesn’t open the file.
I also try to add the ip-address in docker-compose.yml but it doesn’t resolve https://github.com/EGroupware/egroupware/wiki/Collabora-Integration#troubleshooting1

When I login in eGroupware, I see this message “Client authentication failed”: in Administration >> Application >> openID >> Clients there isn’t a client for Collabora, maybe the cause of the problem?

Thank you.

Yes.

Brave this generic message: "The content are blocked. Contact the site owner to resolve the problem"
Firefox open this warning box and after accept with ok, it open a new tab with an empty page.