You can mount your webdav cloud disk inside container.
docker run -d \
-e WEBDAV_USER=<your-login> \
-e WEBDAV_PASSWORD=<your-password> \
-e WEBDAV_URL=<https://cloud-webdav-url> \
--name webdav \
--privileged \
--cap-add=ALL \
-v /dev:/dev \
-v /lib/modules:/lib/modules \
qautomatron/docker-webdav-disk
Set WEBDAV_USER
to user login.
Set WEBDAV_PASSWORD
to user password.
Set WEBDAV_URL
to your webdav url.