Can't find tupperware.jSON

[adamgins]

I have file in folder... but not picked up

-] github.com/chriswessels/meteor-tupperware (tupperbuild v1.0.0)

[-] No tupperware.json found, using defaults.
[-] Downloading Meteor 1.5.2 Installer...
[-] Installing Meteor 1.5.2...
[-] Building your app...
[!] While attempting to build your application, the command: meteor build --allow-superuser --directory /output --architecture os.linux.x86_64
[!] Failed with the exit code 1. The signal was null.
[-] The task produced the following stdout:

file here:
/* tupperware.json */
{
"dependencies": {
"phantomJs": false,
"imageMagick": false
},
"preBuildCommands": [],
"postBuildCommands": [],
"buildOptions": {
"mobileServerUrl": "https://XYZ123.ngrok.io",
"additionalFlags": "--settings settings.json --server-only --server=https://XYZ123.ngrok.io"
}
}