Ionic package IOS Build fails missing 'xcode' npm module on setManualSigning.js

I can't run xcode-select nor install ios-deploy because i'm on linux. I don't understand why should i do that. Wouldn't ionic package command abstract all the build process and dependencies on the cloud? Running the other commands gave me the following ionic info output

global packages:

@ionic/cli-utils : 1.4.0
Cordova CLI      : 7.0.1
Ionic CLI        : 3.4.0

local packages:

@ionic/cli-plugin-cordova : 1.4.0
@ionic/cli-plugin-ionic1  : 2.0.0
Cordova Platforms         : android 5.2.1
Ionic Framework           : ionic1 1.2.4

System:

Node       : v6.5.0
OS         : Linux 3.19
Xcode      : not installed
ios-deploy : not installed
ios-sim    : not installed
npm        : 3.10.3