@douginamug @nemobis given that you're using Docker, I suspect some of the configuration that's listed here must go in the configuration of the web server that is running inside the mediawiki container, not the one that's outside.
@douginamug @nemobis so it's probably easiest to find some instructions specifically tailored to MediaWiki deployments with the Docker image you are using
@pintoch @douginamug Ah yes definitely, must follow the instructions for your installation method.