How can I mount an external USB drive in a docker container?

I created a Ubuntu container with this command

docker run -it --entrypoint "/bin/bash" ubuntu:latest

I can't seem to mount an external USB drive. This works under the host machine, so no issue with the drive. When I try it in the container, I get

$ sudo mount /dev/sda1 /mnt/usb
mount: /mnt/usb: permission denied.
root@048939b7b3e3:/# mount /dev/sda1 /mnt/usb
mount: /mnt/usb: permission denied.

I wouldn't know why I don't have the permissions to mount. According to this tutorial, it should work just like on the host system.

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