now.json

{
  "version": 2,
  "build": {
    "env": {
      "REACT_APP_STRIPE_PUBLIC_KEY_TEST": "@react_app_stripe_public_key_test",
      "REACT_APP_STRIPE_PUBLIC_KEY_LIVE": "@react_app_stripe_public_key_live",
      "REACT_APP_PROVIDER_STRIPE_CLIENT_ID_DEV": "@react_app_provider_stripe_client_id_dev",
      "REACT_APP_PROVIDER_STRIPE_CLIENT_ID_PRD": "@react_app_provider_stripe_client_id_prd",
      "REACT_APP_PROVIDER_GITHUB_CLIENT_ID_DEV": "@react_app_provider_github_client_id_dev",
      "REACT_APP_PROVIDER_GITHUB_CLIENT_ID_PRD": "@react_app_provider_github_client_id_prd",
      "REACT_APP_PROVIDER_SPOTIFY_CLIENT_ID_DEV": "@react_app_provider_spotify_client_id_dev",
      "REACT_APP_PROVIDER_SPOTIFY_CLIENT_ID_PRD": "@react_app_provider_spotify_client_id_prd",
      "REACT_APP_CUBEJS_TOKEN": "@react_app_cubejs_token",
      "SKIP_PREFLIGHT_CHECK": "true",
      "REACT_APP_GA": "UA-148982321-2"
    }
  },
  "headers": [
    {
      "source": "/(.*)\\.(jpg|jpeg|png|webp|svg|js|css)",
      "headers": [
        {
          "key": "Cache-Control",
          "value": "public, immutable, s-maxage=31536000, max-age=31536000, stale-while-revalidate=60"
        }
      ]
    }
  ]
}