DockerBuildContext.from_local_directory is using the incorrect variable for the storage account url

I'd been trying to create an environment using a local directory but I kept running into the following error:

```
ValueError: Invalid URL: https:///subscriptions//resourceGroups//providers/Microsoft.Storage/storageAccounts/
```

On further inspection, I noticed that in the `from_local_directory` function, the incorrect variable is probably being passed to the `account_url` argument of the `BlobServiceClient` constructor. I suppose a storage account URL needs to be constructed using the storage account name and endpoint. However, the `storage_account_full` variable, is being passed to it instead.

**azureml-core version: 1.45.0.post2**

Comienza en DockerBuildContext.from_local_directory e inspecciona cómo el constructor de BlobServiceClient recibe su account_url, especialmente la variable storage_account_full y el nombre y el endpoint de la cuenta de almacenamiento. Reproduce la creación del entorno de un directorio local y confirma que la URL de cuenta resultante es válida en lugar de producir el error Invalid URL mostrado.

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