Please have a look at the following prerequisites for the creation of images on Azure.

Create a Service Principal with contributor role access to an Azure subscription with azure cli (Source).

Command Format

az ad sp create-for-rbac --name [ServicePrincipalName] --role Contributor --scopes /subscriptions/[SubscriptionId] --years 1

Command Example

az ad sp create-for-rbac --name xoap-image-principal --role Contributor --scopes /subscriptions/xxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx --years 1

Command Output

{
"appId": "[ClientId (Guid)]",
"displayName": "xoap-image-principal",
"name": "http://xoap-image-principal ",
"password": "[Password/ClientSecret]",
"tenant": "[TenantId (Guid)]"
}

From that output you can create a connection for your subscription

SubscriptionId:             xxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
TenantId (tenant):          [Guid]
ClientId (appId):           [Guid]
ClientSecret (password)     [Text]