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moby--moby/builder/dockerfile/dispatchers_unix.go

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// +build !windows
package dockerfile
import (
"errors"
"os"
"path/filepath"
)
// normalizeWorkdir normalizes a user requested working directory in a
// platform semantically consistent way.
func normalizeWorkdir(_ string, current string, requested string) (string, error) {
if requested == "" {
return "", errors.New("cannot normalize nothing")
}
current = filepath.FromSlash(current)
requested = filepath.FromSlash(requested)
if !filepath.IsAbs(requested) {
return filepath.Join(string(os.PathSeparator), current, requested), nil
}
return requested, nil
}
// equalEnvKeys compare two strings and returns true if they are equal. On
// Windows this comparison is case insensitive.
func equalEnvKeys(from, to string) bool {
return from == to
}