Describe the bug
The currently referenced Docker image in devcontainer.json in the main branch is incompatible with the Nextcloud version.

This is the error message shown when opening the exposed port 80:

We should upgrade the image to PHP 8.4: https://github.com/juliusknorr/nextcloud-docker-dev/pkgs/container/nextcloud-dev-php84