Check opt.NativeTooling before creating build directory (#23894)

#23893

Changes on top of the PR from the @ilpianista:
https://github.com/fleetdm/fleet/pull/23796

changes/23893-fix-docker-fleetctl

@@ -0,0 +1 @@
+* Fixed bug in `fleetdm/fleetctl` docker image where the `build` directory does not exist when generating deb/rpm packages.

orbit/pkg/packaging/linux_shared.go

@@ -250,8 +250,8 @@ func buildNFPM(opt Options, pkger nfpm.Packager) (string, error) {
 		return "", fmt.Errorf("removing existing file: %w", err)
 	}
 
-	if _, err := os.Stat("build"); errors.Is(err, os.ErrNotExist) {
-		if err := secure.MkdirAll("build", 0700); err != nil {
+	if opt.NativeTooling {
+		if err := secure.MkdirAll(filepath.Dir(filename), 0o700); err != nil {
 			return "", fmt.Errorf("cannot create build dir: %w", err)
 		}
 	}