support of nerdctl inspect {imagename}

[mviereck]

nerdctl inspect - Return low-level information on objects. Currently, only supports container objects.

Currently nerctl does not support to inspect images.
Will that be added in future?

Background:
Yet I am adding support for nerdctl in x11docker. For several features I need to inspect the image. The most important informations are ENTRYPOINT and CMD. Further checks are done for WORKDIR, USER and the image architecture (mostly amd64).

Is there another way to get information about ENTRYPOINT and CMD before starting the container?

[AkihiroSuda]

PR is wanted

[mviereck]

I have no experience in go so I cannot provide a PR myself, unfortunately.

Is there another way to get information about ENTRYPOINT and CMD before starting the container?

nerdctl inspect {container} works; so if there would be a nerdctl create I could obtain the information from the non-running container. That would be a reasonable workaround. However, nerdctl create is not included yet, too. Any chance that you would include this?

[mviereck]

I've included a workaround in x11docker that allows all x11docker features if the user provides a container command himself. So my request is less urgent now, but still desirable.

(Another workaround is needed in x11docker because nerdctl exec --user is not supported. However, the impact is minor.)

[fahedouch]

@AkihiroSuda @mviereck I take this ticket

[fahedouch]

nerdctl inspect {imagename} is now available (#239)

TODO: refacto ParseRepoTag function in pkg/imgutil/imgutil.go (related : #239 (comment) #239 (comment))

[mviereck]

Great, much thanks!
I hope it will be available in a release soon.

[AkihiroSuda]

Released v0.9.0 https://github.com/containerd/nerdctl/releases/tag/v0.9.0

[mviereck]

Thank you very much!