FIX ; script installation boostrap

project/src/composer.json

@@ -16,6 +16,8 @@
     },
     "scripts": {
       "post-update-cmd": [
+        "mkdir -p /css",
+        "mkdir -p ./js",
         "rm -f ./js/bootstrap*.js*",
         "rm -f ./css/bootstrap*.css*",
         "cp ./vendor/twbs/bootstrap/dist/js/* ./js/",