eShopOnContainers/deploy/az/cosmos/deploycosmos.json

{
    "$schema": "http://schema.management.azure.com/schemas/2014-04-01-preview/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "name": {
            "type": "String"
        }
    },
    "variables": {
        "name": "[concat(parameters('name'), uniqueString(resourceGroup().id))]",
        "location":"[resourceGroup().location]"
    },
    "resources": [
        {
            "type": "Microsoft.DocumentDb/databaseAccounts",
            "kind": "MongoDB",
            "name": "[variables('name')]",
            "apiVersion": "2015-04-08",
            "location": "[variables('location')]",
            "properties": {
                "databaseAccountOfferType": "Standard",
                "locations": [
                    {
                        "id": "[concat(variables('name'), '-', variables('location'))]",
                        "failoverPriority": 0,
                        "locationName": "[variables('location')]"
                    }
                ]
            }
        }
    ]
}