In Azure devops how to copy application zip file to blob storage

Question

How to copy the application zip file to blob storage in Azure CICD? I have the YAML below. I want the app.zip copied to blob. The file gets copied, but for some reason, the size of the blob is 1KB. Am I doing something wrong?

Here is the code:

- task: PublishBuildArtifacts@1
  inputs:
    pathtoPublish: '$(Build.ArtifactStagingDirectory)' 
    artifactName: 'release'

- task: ArchiveFiles@2
  inputs:
    rootFolderOrFile: '$(Build.BinariesDirectory)'
    includeRootFolder: true
    archiveType: 'zip'
    archiveFile: '$(Build.ArtifactStagingDirectory)/App.zip'
    replaceExistingArchive: true

- task: AzureFileCopy@3
  inputs:
    SourcePath: '$(Build.ArtifactStagingDirectory)/App.zip'
    azureSubscription: 'testsubscription'
    Destination: 'AzureBlob'
    storage: 'teststorage'
    ContainerName: 'testcontainer'

What am I doing wrong?