Alignment with moby swagger definition for ContainerConfig.entrypoint

[milenkovicm]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

running podman inspect <running container> returns schema which is not aligned to current https://github.com/moby/moby/blob/master/api/swagger.yaml definition. Json returned by inspect command diverges from schema in at least two situations:

1. ContainerConfig.entrypoint which is returned by podman as string but according to definition https://github.com/moby/moby/blob/master/api/swagger.yaml#L1271-L1281` it should be array of strings. "Entrypoint": "",
2. ContainerConfig.StopSignal is returned as integer, schema defines it as string at it might be integer value of signal or string value. https://github.com/moby/moby/blob/aca813e1359f1a3501f1b7453e05b10b3425a90d/api/swagger.yaml#L1306-L1311

This problem is annoying as strongly typed languages (e.g rust) do not like having discrepancy between types.

Steps to reproduce the issue:

1. run any container
2. podman inspect <container_id>
3. observe Entrypoint and StopSignal returned in output

Describe the results you received:

entrypoint and stopsignal have wrong types (as per swagger definition)

Describe the results you expected:

I'd expect them to be string array and string

Additional information you deem important (e.g. issue happens only occasionally):

Output of podman version:

podman version 4.1.0

but issues is available in earlier versions as well

(paste your output here)

Output of podman info --debug:

(paste your output here)

Package info (e.g. output of rpm -q podman or apt list podman):

(paste your output here)

Have you tested with the latest version of Podman and have you checked the Podman Troubleshooting Guide? (https://github.com/containers/podman/blob/main/troubleshooting.md)

Yes

Additional environment details (AWS, VirtualBox, physical, etc.):

[Luap99]

Changing the podman inspect format will break the podman API, see #13811

If you need 100% compatible docker output I recommend to use the compat API.

[milenkovicm]

@Luap99 if compat API is podman-docker, it has the same problem, those two properties have wrong type there as well

[Luap99]

No the compat API is the actual podman api service, podman-docker just calls podman ...

The podman rest API which provides all docker API endpoints (except swarm), https://docs.podman.io/en/latest/_static/api.html

[milenkovicm]

all right @Luap99 , will have a look at it.
as far as i can see types align there.

feel free to close this one if you wish

[github-actions]

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