sipahiro I just had a similar issue - I had to include a bunch of icon pngs files in my bundle. I put them all in a "system" folder like Daniel has in the Scaffold Mobile project and included that folder in my build via the asconfig.json (I'm using Visual Studio).
"files":[
{
"file": "assets/textures",
"path": "textures"
},
{
"file": "assets/audio",
"path": "audio"
},
{
"file": "assets/fonts",
"path": "fonts"
},
{
"file": "Assets.car",
"path": "Assets.car"
},
{
"file": "system",
"path": ""
}
]