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podman build --build-arg should fall back to environment

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Fixes: https://github.com/containers/podman/issues/9571

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
This commit is contained in:
Daniel J Walsh
2021-03-02 15:28:50 -05:00
parent 2c500a8145
commit 01ffe2c30a
1 changed files with 6 additions and 1 deletions
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7
cmd/podman/images/build.go
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@ -318,7 +318,12 @@ func buildFlagsWrapperToOptions(c *cobra.Command, contextDir string, flags *buil
if len(av) > 1 {
args[av[0]] = av[1]
} else {
delete(args, av[0])
// check if the env is set in the local environment and use that value if it is
if val, present := os.LookupEnv(av[0]); present {
args[av[0]] = val
} else {
delete(args, av[0])
}
}
}
}