Could this setting be set in the future via an environment variable for Docker?
I think not few people of the Raw edition probably use it for deploying updates.
Of course one could change the config in the docker container, but that would be much more convenient.
Welcome back to the forum @PrieserMax and thanks for yor suggestion!
There is a significantly easier way though: The Werk mentions this:
If you rely on that path being accessible you can add a custom configuration file to the site apache, e.g. etc/apache/conf.d/000_custom.conf.
So just bind-mount your custom configuration file with the content outlined in the Werk read-only into the container and you are all set. Including update persistence.
An environment variable actually makes little sense here. As in “huge effort, little value”. Especially, as the solution outlined below works with built-in Docker functionality and is easy to use as-is.