nvidia-docker run emits pull status to stdout

[hholst80]

Expected results (as docker cli does)

hholst@fb-hholst3 ~ 
$ CID=$(docker run -dit alpine:latest sh)
Unable to find image 'alpine:latest' locally
latest: Pulling from library/alpine
0a8490d0dfd3: Pulling fs layer
0a8490d0dfd3: Verifying Checksum
0a8490d0dfd3: Download complete
0a8490d0dfd3: Pull complete
Digest: sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8
Status: Downloaded newer image for alpine:latest

hholst@fb-hholst3 ~ 
$ echo $CID
585df99e599e6024de6eb3ea0b449640b4704d9c049e62762281002fb06c396c

Nvidia docker result:

hholst@fb-hholst3 ~ 
$ CID=$(nvidia-docker run -dit alpine:latest sh)

hholst@fb-hholst3 ~ 
$ echo $CID
latest: Pulling from library/alpine 0a8490d0dfd3: Pulling fs layer 0a8490d0dfd3: Verifying Checksum 0a8490d0dfd3: Download complete 0a8490d0dfd3: Pull complete Digest: sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8 Status: Downloaded newer image for alpine:latest 60649d2e04a5ed5ca5d80e286bd8ee6c701ef817f97ccc60cc0611729261e334

Notes

Please note that you need to remove the image before running the command with docker rmi alpine:latest.

[hholst80]

Temporary workaround for anyone running into this problem:

CID=$(nvdia-docker run ... | tail -n1)

The workaround also works with docker cli.

[flx42]

Good catch!
Should be an easy fix.

nvidia-docker/src/docker/docker.go

Line 32 in 3422bca

cmd.Stdout = os.Stdout

-               cmd.Stdout = os.Stdout
+               cmd.Stdout = os.Stderr

We will fix that in 1.0.1, thanks for providing a workaround!

[hholst80]

No problem! Just make sure that the container ID is still emitted to stdout. ;-)