Accessing the host device inside a container

From Docker 1.2 onwards, we can give access of the host device to a container with the --device option, following the run command. Earlier, you had to bind-mount it with the -v option, and that had to be done with the --privileged option.

Getting ready

Ensure that the Docker daemon is running on the host and can be connected through the Docker client. You will also need a device to pass the container to.

How to do it...

You can give access of a host device to the container using the following syntax:

docker container run --device=<Host Device>:<Container Device Mapping>:<Permissions> [OPTIONS] IMAGE [COMMAND]  [ARG...]

Here is an example of using the preceding command:

$ docker container run --device=/dev/sdc:/dev/xvdc \          -i -t ubuntu /bin/bash

How it works...

The preceding command will access /dev/sdc inside the container.

See also

Look at the help option of docker container run:

$ docker container run --help

The documentation on...