I read on the collabora website that we must add an user to the dockercommand, like this:
docker run -t -d -p 127.0.0.1:9980:9980 -e âdomain=cloud\.nextcloud\.comâ -e âusername=adminâ -e âpassword=123456â --restart always --cap-add MKNOD collabora/code
after execute this command collabora works fine for meâŚ