DockerCLI/cli/config/credentials/default_store.go

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package credentials
import (
"os/exec"
)
// DetectDefaultStore return the default credentials store for the platform if
// the store executable is available.
func DetectDefaultStore(store string) string {
// user defined or no default for platform
if store != "" || defaultCredentialsStore == "" {
return store
}
if _, err := exec.LookPath(remoteCredentialsPrefix + defaultCredentialsStore); err == nil {
return defaultCredentialsStore
}
return ""
}