Function hasBuilderName

cmd/docker/builder.go:183–199

hasBuilderName checks if a builder name is defined in args or env vars

(args []string, envs []string)

// hasBuilderName checks if a builder name is defined in args or env vars
func hasBuilderName(args []string, envs []string) bool {
	var builder string
	flagset := pflag.NewFlagSet("buildx", pflag.ContinueOnError)
	flagset.Usage = func() {}
	flagset.SetOutput(io.Discard)
	flagset.StringVar(&builder, "builder", "", "")
	_ = flagset.Parse(args)
	if builder != "" {
		return true
	}
	for _, e := range envs {
		if strings.HasPrefix(e, "BUILDX_BUILDER=") && e != "BUILDX_BUILDER=" {
			return true
		}
	}
	return false
}