Docker Rclone volume question

i want to make a Backup FTP/SFTP, and I found rclone volume. But I don't know if that is what I need.

I would like to have a folder, all should get uploaded to cloud and after uploading it should not exist anymore on the local drive. When i understand it, I need to do vfs-cache write? Or without cache?

that is what rclone mount does

the odds are, you do need that.

But what is rclone volume docker?
i saw that they also have SFTP and could be what i need.

here are the docs.

if you want to move local files to cloud, then do not need rclone mount or docker.
can be as simple as
rclone move /path/to/source remote: