How to attach a blob file from Azure to Business Central (Document Attachment)?

Dynamics 365 Business Central

Copy a file from one Azure container to another container in the same storage location
Create a Purchase Invoice and attach the Azure blob in the document attachment
Delete the blob file from the source container
Complete basic setups in Azure and Business Central as mentioned in Part 1
Create a setup table in Business Central for storage account, source and destination containers with access key
Create a setup page with an action button to trigger code for creating an Invoice
Create a page extension for Document attachment to download the blob file
Implement code to read source and destination containers, copy stream files, attach blob file to a purchase invoice, and delete the source blob file

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