A basic script to upload local files to blob storage, settings ContentType correctly for png and jpeg

upload-to-blob-storage.ps1

Param(
[string]$rootDir,
[string]$storage,
[string]$key,
[string]$container
)

try {

    $context = New-AzureStorageContext -StorageAccountName $storage -StorageAccountKey $key

    foreach ($file in Get-ChildItem -Path $rootDir)
    {  
        $prop =  @{"ContentType"="application/octetstream"} 

        if ($file.Extension.ToLowerInvariant() -eq ".png")
        {
            $prop = @{"ContentType"="image/png"}         
        }

        if ($file.Extension.ToLowerInvariant() -eq ".jpg")
        {
            $prop = @{"ContentType"="image/jpeg"}
        }
        
        Set-AzureStorageBlobContent -Blob $file.Name -Container $container -File $file.FullName -Context $context -Properties $prop -Force
    }
} 
catch [System.Exception] {
    Write-Host $_.Exception.ToString()
    exit 1
}