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DockerClient.version() falls back to trying '--version' #213

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renat1sakenov
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Hello.

As far as I can tell, only '-v' option is used to determine the docker version.

I added a fallback to check again for '--version', since I'm trying to make this run with podman instead of docker. Podman does not support the '-v' flag.

Best,
Renat

…ing null

This is added in an attempt to make this plugin compatible with podman, where '-v' does not work.
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The --version option can be used with both docker and podman. Thus, the code can be simplified.

@@ -251,9 +251,12 @@ public void rm(@Nonnull EnvVars launchEnv, @Nonnull String containerId) throws I
LaunchResult result = launch(new EnvVars(), true, "-v");

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Why just not use the --version option? It is supported by both docker (see https://docs.docker.com/engine/reference/commandline/cli/) and podman.

Suggested change
LaunchResult result = launch(new EnvVars(), true, "-v");
LaunchResult result = launch(new EnvVars(), true, "--version");

This way, there is no need to add another if-statement if the -v option fails.

@offa
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offa commented Apr 28, 2021

The -v shorthand is available with podman 1.6 (again) . However, as @95jonpet I'd prefer --version, especially to avoid confusion with --volume's shorthand.

@renat1sakenov
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Fully agree, I commited the change to only check for --version.

@offa
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offa commented Feb 4, 2022

ping @rsandell

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