DodoApp: support Hugo static websites

Change-Id: Ie01f12443e81f3bfc9f7500d443a0399a1fe01ef
diff --git a/apps/app-runner/main.go b/apps/app-runner/main.go
index fb17415..ee2476a 100644
--- a/apps/app-runner/main.go
+++ b/apps/app-runner/main.go
@@ -41,10 +41,12 @@
 				},
 			},
 		},
-		RemoteName:      "origin",
-		ReferenceName:   "refs/heads/master",
-		Depth:           1,
-		InsecureSkipTLS: true,
+		RemoteName:        "origin",
+		ReferenceName:     "refs/heads/master",
+		Depth:             1,
+		RecurseSubmodules: git.DefaultSubmoduleRecursionDepth,
+		ShallowSubmodules: true,
+		InsecureSkipTLS:   true,
 	})
 	return err
 }