Docker cluster does not know it's supposed to be forming one

Hi everyone, I'm working on a simple neo4j cluster in docker for a school project.

I've made a docker-compose file based on the documentation and multiple examples online, and everything seems to be correct.

However, the debug log does not show it is attempting for the cluster, and any cluster-related procedure I call returns that such procedure does not exist.

I've really tried to fix it but I can't find a similar issue anywhere else.

It was a simple typo:
DMBS instead of DBMS