Unable to update Ghost from 5.2.3 to 5.4.0

[giacomosilli]

This unfortunately did not solve my problem

Unable to upgrade Ghost from v4.2.0 to v4.3.0 (CASCADE - UNKNOWN_CODE_PLEASE_REPORT)

I tried to follow this but without any luck… I am using official docker image. When I exec into mariadb docker container I find only /etc/mysql/conf.d/docker.cnf. I added there the required line but it had no effect and still encountering the same error message (I persisted the config and restarted the container). Any suggestions for the docker users please? Thanks, Michal