UEScripts/packageconfig_template.json

{
    "OutputDir": "/Path/To/Output/Parent/Dir",
    "ZipDir": "/Path/To/Zipped/Releases/Folder",

    "ProjectFile": "OptionalProjectFilenameWillDetectInDirOtherwise.uproject",

    "Target": "GameTargetName",
    "CookAllMaps": true,    
    "MapsIncluded": [
    ],
    "MapsExcluded": [
    ],
    "UsePak": true,


    "Variants": [
        {
            "Name": "PublicWin64SteamBuild", 
            "Platform": "Win64",
            "Configuration": "Shipping",
            "SteamAppId": "YourSteamAppId",
            "SteamDepotId": "YourWindowsDepotId",
            "Zip": false,
            "ExtraBuildArguments": "-EnableSteamworks",
            "Cultures": [
                "en",
                "fr",
                "de"
            ]
        },
        {
            "Name": "PublicWin64Build", 
            "Platform": "Win64",
            "Configuration": "Shipping",
            "ItchAppId": "itch-user/app-name",
            "ItchChannel": "win64",
            "Zip": false
        },
        {
            "Name": "PrivateWin64Build", 
            "Platform": "Win64",
            "Configuration": "Development",
            "ItchAppId": "itch-user/private-app-name",
            "ItchChannel": "win64-dev",
            "Zip": true,
            "ExtraBuildArguments": "-Foo=Bar -Something"
        }
    ],

    "DefaultVariants": [
        "PrivateWin64Build"
    ],

    "SteamLogin": "YourSteamReleaseUser"
}