This pull request introduces a new HTTP mirror provider for DAppNode package content, enabling faster and more efficient access to package files via a configurable mirror. It also updates environment configuration, improves avatar URL fallback logic throughout the codebase, and adds support for mirror-based package data retrieval. The changes are grouped below by theme:

Mirror Provider Integration

• Added a new HttpMirrorProvider implementation in mirrorProvider.ts to support fetching and streaming package files from a mirror, including progress tracking and error handling.
• Defined mirror provider types and interfaces in types.ts, specifying methods for listing files, fetching files, streaming files, and building URLs.
• Introduced utility functions in utils.ts for CID normalization and progress rounding.
• Exported mirror provider modules from the content provider index for use throughout the codebase.

Configuration and Environment

• Added mirror-related environment variables (CONTENT_MIRROR_BASE_URL, CONTENT_MIRROR_TIMEOUT_MS, CONTENT_MIRROR_MAX_BYTES) to params.ts and both docker-compose files, allowing mirror provider configuration via environment. [1] [2] [3]

Installer and Package Data Enhancements

• Updated DappnodeInstaller to accept mirror provider configuration and added a new method getPackageDataForListing for fast mirror-based package data retrieval, bypassing IPFS and signature verification. [1] [2]
• Modified image download logic in downloadImages.ts to support writing files using mirror provider parameters.

Avatar URL Fallback Improvements

• Improved avatar URL fallback logic across multiple modules (fetchDirectory.ts, fetchRegistry.ts, fetchDnpRequest.ts, getOptimismConfig.ts, stakerComponent.ts) to ensure avatars are always available, using mirror URLs, manifest URLs, or empty string as needed. [1] [2] [3] [4] [5] [6] [7]

Manifest Data Extension

• Extended manifest data selection in packageGetData.ts to include avatarUrl for richer package metadata.

These changes collectively enable mirror-based content retrieval, improve package listing performance, and ensure robust avatar handling throughout the DAppNode ecosystem.