But do I need to change something in the configuration of the ceramic node (it is launched via docker)? Because with the entry through the Node.js library errors also occur
If you’re taking about the configuration of your local Ceramic node trying to connect to the Clay network, you shouldn’t need to change anything. The daemon will not attempt to connect to the gateway, which is having some issues at the moment.
Please also note that the gateway will soon be decommissioned.