[MM3-users] How to get rid of footer (Mailman3)

Hi, I have read multiple posts in this forum that you should be able to get rid of the footer completely but I am unable to. I have tried:

• adding the footer template to a list and not adding any "Data" to it. Result was a attachment with some "dfgdfgdfgdfg" text in it.
• adding/creating a blank "list:member:generic:footer" document to /var/templates/site/en, var/templates/lists/LIST.ID/en/ and var/templates/domains/DOMAIN/en/. Result is that the sent e-mail still has the original unsubscribe text in the footer (as an attachment)
• removing all the files from /mailman/src/mailman/templates/en, still no change

We are running Mailman within Docker on these versions: maxking/mailman-core:0.3.2 maxking/mailman-web:0.3.2

When searching the docker for example "list:member:generic:footer" file, there isnt one (except the one I created) and when I search the file for text "unsubscribe", then it is only included in the postfix_lmtp file, but this doesnt seem to be it since it is overwritten every time.