template.json

{
    "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "username": {
            "type": "string",
            "minLength": 1,
            "metadata": {
                "description": "Admin username"
            }
        },
        "password": {
            "type": "securestring",
            "metadata": {
                "description": "Admin password"
            }
        },
        "resourcePrefix": {
            "type": "string",
            "metadata": {
                "description": "The string that prefixes all resources"
            }
        }
    },
    "variables": {
        "resourcePrefix": "[if(empty(parameters('resourcePrefix')),concat(resourceGroup().name,'-cloud'),concat(parameters('resourcePrefix'),'-cloud'))]",
        "storageAccountName": "[if(greater(length(replace(concat(variables('resourcePrefix'),'-sa'),'-','')),24),substring(replace(concat(variables('resourcePrefix'),'-sa'),'-',''),0,24),replace(concat(variables('resourcePrefix'),'-sa'),'-',''))]"
    },
    "resources": [
        {
            "name": "[concat(variables('resourcePrefix'),'-sql')]",
            "type": "Microsoft.Sql/servers",
            "location": "[resourceGroup().location]",
            "apiVersion": "2014-04-01-preview",
            "dependsOn": [],
            "tags": {},
            "properties": {
                "administratorLogin": "[parameters('username')]",
                "administratorLoginPassword": "[parameters('password')]"
            },
            "resources": [
                {
                    "name": "firewall-allow-azure",
                    "type": "firewallrules",
                    "location": "[resourceGroup().location]",
                    "apiVersion": "2014-04-01-preview",
                    "dependsOn": [
                        "[concat(variables('resourcePrefix'),'-sql')]"
                    ],
                    "properties": {
                        "startIpAddress": "0.0.0.0",
                        "endIpAddress": "0.0.0.0"
                    }
                }
            ]
        },
        {
            "apiVersion": "2015-06-15",
            "type": "Microsoft.Storage/storageAccounts",
            "name": "[variables('storageAccountName')]",
            "location": "[resourceGroup().location]",
            "tags": {
                "displayName": "storage-account"
            },
            "properties": {
                "accountType": "Standard_LRS"
            }
        },
        {
            "type": "Microsoft.Storage/storageAccounts/blobServices",
            "apiVersion": "2019-04-01",
            "name": "[concat(variables('storageAccountName'), '/default')]",
            "dependsOn": [
                "[resourceId('Microsoft.Storage/storageAccounts',variables('storageAccountName'))]"
            ],
            "properties": {
                "cors": {
                    "corsRules": []
                },
                "deleteRetentionPolicy": {
                    "enabled": false
                }
            }
        },
        {
            "name": "[concat(variables('storageAccountName'), '/default/game')]",
            "type": "Microsoft.Storage/storageAccounts/blobServices/containers",
            "apiVersion": "2018-07-01",
            "dependsOn": [
                "[resourceId('Microsoft.Storage/storageAccounts',variables('storageAccountName'))]",
                "[resourceId('Microsoft.Storage/storageAccounts/blobServices',variables('storageAccountName'), 'default')]"
            ],
            "properties": {
                "publicAccess": "Blob"
            }
        }
    ],
    "outputs": {}
}