Updates Mimic doc on using spacemouse in container (#322)

# Description

Advise users to use local deployment if using spacemouse device. Inform
users that they must manually mount the device if using spacemouse in
docker container.

## Type of change

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applicable. -->

- Documentation update


## Checklist

- [x] I have run the [`pre-commit` checks](https://pre-commit.com/) with
`./isaaclab.sh --format`
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] I have updated the changelog and the corresponding version in the
extension's `config/extension.toml` file
- [ ] I have added my name to the `CONTRIBUTORS.md` or my name already
exists there

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docs/source/overview/teleop_imitation.rst

@@ -33,6 +33,16 @@ For smoother operation and off-axis operation, we recommend using a SpaceMouse a
    Identify the device corresponding to the SpaceMouse by running ``cat /sys/class/hidraw/hidraw<#>/device/uevent`` on each of the devices listed
    from the prior step.
 
+   We recommend using local deployment of Isaac Lab to use the SpaceMouse. If using container deployment (:ref:`deployment-docker`), you must manually mount the SpaceMouse to the ``isaac-lab-base`` container by
+   adding a ``devices`` attribute with the path to the device in your ``docker-compose.yaml`` file:
+
+   .. code:: yaml
+
+      devices:
+         - /dev/hidraw<#>:/dev/hidraw<#>
+
+   where ``<#>`` is the device index of the connected SpaceMouse.
+
    Only compatible with the SpaceMouse Wireless and SpaceMouse Compact models from 3Dconnexion.
 
 For tasks that benefit from the use of an extended reality (XR) device with hand tracking, Isaac Lab supports using NVIDIA CloudXR to immersively stream the scene to compatible XR devices for teleoperation.