flysystem-tests.yaml

services:
    digitalocean_spaces_client:
        class: 'AsyncAws\S3\S3Client'
        arguments: # ...

flysystem:
    storages:
        cdn.storage.memory:
            adapter: 'memory'

        cdn.storage.digitalocean:
            adapter: 'asyncaws'
            options:
                client: 'digitalocean_spaces_client'
                bucket: '%env(DIGITALOCEAN_SPACES_BUCKET)%'

        cdn.storage.local:
            adapter: 'local'
            options:
                directory: '%kernel.project_dir%/var/storage/cdn'

        cdn.storage:
            adapter: 'lazy'
            options:
                source: '%env(APP_CDN_STORAGE)%'
                
# Then in .env: 
# APP_CDN_STORAGE=cdn.storage.local

# In .env.test:
# APP_CDN_STORAGE=cdn.storage.memory

# And in prod:
# APP_CDN_STORAGE=cdn.storage.digitalocean