Golang context with cancellation on signal receive

sigterm_context.go

func contextWithSigterm(ctx context.Context) context.Context {
	ctxWithCancel, cancel := context.WithCancel(ctx)
	go func() {
		defer cancel()

		signalCh := make(chan os.Signal, 1)
		signal.Notify(signalCh, os.Interrupt, syscall.SIGTERM)

		select {
		case <-signalCh:
		case <-ctx.Done():
		}
	}()

	return ctxWithCancel
}

@stokito, thank you for the feedback. I've updated it.