Does docker support CDI?

[yeahdongcn]

I noticed docker is mentioned in the Examples section, just wondering whether docker supports CDI, and are there any extra configurations on how to set up docker?

# CLI examples below

# Verbose
$ docker/podman run --device vendor.com/device=myDevice --device vendor.com/device=myDevice2 ...

# Less verbose, through infering the vendor from the device name
$ docker/podman run --device myDevice ...

# Special case
$ docker/podman run --device vendor.com/device=all ...

[elezar]

@yeahdongcn docker does not currently support CDI. This is something that we have been discussing, but have not had the opportunity to look at it yet.

Here we see a similar approach to podman being followed where the --device flag is extended to check for fully-qualified CDI device names and the apropriate modifications made to the OCI spec. Note that this would also have to disable the --gpus flag (and possibly even mark this as deprecated).

Note that there are other docker use cases that are not covered by this, including docker-compose and one would have to work with the community to add CDI support there too.

[yeahdongcn]

@elezar Thanks for the explanation. Is there an open issue for docker to integrate with CDI?

[elezar]

We have created docker/cli#3864 to track the work required on the docker front. Thre is not yet a timeline on this.

[elezar]

We have created moby/moby#45134 and docker/cli#4084 to add CDI support to moby and the Docker CLI.

[bart0sh]

@elezar both above mentioned PRs have been merged. Should we close this issue?

[github-actions]

This issue is stale because it has been open 90 days with no activity. This issue will be closed in 30 days unless new comments are made or the stale label is removed.

[elezar]

Closing this issue as completed. CDI is available as an opt-in feature in Docker as of Docker 25.