add filebrowser/frontend as a submodule

.gitignore

@@ -1,5 +1,4 @@
 .DS_Store
-frontend/
 */dist/*
 *.db
 *.db.lock

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "frontend"]
+	path = frontend
+	url = https://github.com/filebrowser/frontend

build.sh

@@ -5,16 +5,12 @@ set -e
 cd $(dirname $0)
 
 # Clean the dist folder and build the assets
-if [ ! -d "frontend" ]; then
-  git clone -b master https://github.com/filebrowser/frontend
-fi;
 cd frontend
 if [ -d "dist" ]; then
   rm -rf dist/*
 fi;
 yarn install
 yarn build
-
 cd ..
 
 dep ensure -vendor-only