silverstripe-framework/_config/asset.yml

---
Name: coreflysystem
---
SilverStripe\Core\Injector\Injector:
  # Define the default adapter for this filesystem
  FlysystemPublicAdapter:
    class: 'SilverStripe\Assets\Flysystem\PublicAssetAdapter'
  # Define the secondary adapter for protected assets
  FlysystemProtectedAdapter:
    class: 'SilverStripe\Assets\Flysystem\ProtectedAssetAdapter'
  # Define the default filesystem
  FlysystemPublicBackend:
    class: 'League\Flysystem\Filesystem'
    constructor:
      Adapter: '%$FlysystemPublicAdapter'
      Config:
        visibility: public
  # Define the secondary filesystem for protected assets
  FlysystemProtectedBackend:
    class: 'League\Flysystem\Filesystem'
    constructor:
      Adapter: '%$FlysystemProtectedAdapter'
      Config:
        visibility: private
---
Name: coreassets
After:
  - '#coreflysystem'
---
SilverStripe\Core\Injector\Injector:
  # Define our SS asset backend
  AssetStore:
    class: 'SilverStripe\Assets\Flysystem\FlysystemAssetStore'
    properties:
      PublicFilesystem: '%$FlysystemPublicBackend'
      ProtectedFilesystem: '%$FlysystemProtectedBackend'
  ProtectedFileController:
    class: SilverStripe\Assets\Storage\ProtectedFileController
    properties:
      RouteHandler: '%$AssetStore'
  AssetNameGenerator:
    class: SilverStripe\Assets\Storage\DefaultAssetNameGenerator
    type: prototype
  # Requirements config
  GeneratedAssetHandler:
    class: SilverStripe\Assets\Flysystem\GeneratedAssetHandler
    properties:
      Filesystem: '%$FlysystemPublicBackend'
  SilverStripe\View\Requirements_Minifier:
    class: SilverStripe\View\JSMinifier
  SilverStripe\View\Requirements_Backend:
    properties:
      AssetHandler: '%$GeneratedAssetHandler'
---
Name: coreassetroutes
After:
  - '#coreassets'
---
SilverStripe\Control\Director:
  rules:
    'assets': ProtectedFileController
---
Name: imageconfig
---
SilverStripe\Core\Injector\Injector:
  SilverStripe\Assets\Image_Backend:
    class: SilverStripe\Assets\GDBackend
  Image_Backend: '%$SilverStripe\Assets\Image_Backend'