Defender for Containers is set to On (Standard pricing tier)

resource "azurerm_security_center_subscription_pricing" "<example_resource_name>" {
  resource_type = "Containers"   # Critical: targets Defender for Containers plan
  tier          = "Standard"     # Critical: enables Standard (ON)
}

// Subscription-level deployment to enable Defender for Containers
targetScope = 'subscription'

resource <example_resource_name> 'Microsoft.Security/pricings@2023-01-01' = {
  name: 'Containers'
  properties: {
    pricingTier: 'Standard' // Critical: sets Defender for Containers plan to ON (Standard)
  }
}