{ "hosting": { "public": "site", "ignore": [ "firebase.json", "**/.*", "_headers", "**/*.apk" ], "headers": [ { "source": "**/*.apk", "headers": [ { "key": "Content-Type", "value": "application/vnd.android.package-archive" }, { "key": "Content-Disposition", "value": "attachment" } ] } ] } }