examples/all/app/views/pwa/manifest.json.erb
{
"name": "AllExample",
"icons": [
{
"src": "/icon.png",
"type": "image/png",
"sizes": "512x512"
},
{
"src": "/icon.png",
"type": "image/png",
"sizes": "512x512",
"purpose": "maskable"
}
],
"start_url": "/",
"display": "standalone",
"scope": "/",
"description": "AllExample.",
"theme_color": "red",
"background_color": "red"
}