I didn't realize I need the same thing until I read your post.
AgenDAV is in maintenance mode, but they also say:
New features may be added by PRs however. New features may be proposed in issues tickets, send as Pull Requests, and the maintainers will review and presumably merge them. PRs for bugfixes are welcome and will be reviewed & merged.
Linux Containers (LXC) is an operating system-level virtualization method for running multiple isolated Linux systems (containers) on a control host using a single Linux kernel.
Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..............