google/go-containerregistry
Go Containerregistry
go-containerregistry is a Go library and toolkit for interacting with OCI and Docker registries. It provides a programmatic implementation of the Open Container Initiative distribution specification to fetch, upload, and manage container images, manifests, and layers.
The library functions as a container image manipulation tool and a multi-platform image index manager. It enables the resolution and management of manifest lists that target various hardware architectures and operating systems without requiring a local daemon.
The toolkit covers a broad range of registry interactions, including image retrieval, content addressing, and the creation of automated image pipelines for distribution.
Features
- OCI Registry API Clients - Provides a programmatic implementation of the OCI distribution specification for interacting with container registries.
- Content-Based Deduplication - Implements content-based deduplication using cryptographic hashes to identify identical image layers across registries.
- OCI Container Registry Clients - Provides a Go library for interacting with OCI and Docker registries to fetch, upload, and manage container images.
- Multi-Architecture Images - Supports building and managing manifest lists for container images targeting different hardware architectures.
- Container Image Registries - Provides tools to create, upload, and retrieve container images by interacting with registry manifests and layers.
- Daemonless Image Manipulation - Provides a toolkit for reading and writing manifests and layers without requiring a local container daemon.
- Container Image Distribution - Implements the standard distribution specification to fetch container image data from remote registries.
- Multi-Platform Index Management - Manages image indexes and manifest lists to support images targeting multiple platforms or nested artifacts.
- Container Registry Integrations - Interacts with registries using the OCI distribution specification to push and pull image data.
- In-Memory Image Representations - Provides an abstract in-memory representation of container images and layers to allow modifications before committing changes.
- Distribution Specifications - Implements the OCI Distribution Specification for the programmatic transfer of container image data.
- Platform Index Resolution - Parses manifest lists to select the correct image digest based on the target operating system and CPU architecture.
- Daemonless Registry Interaction - Performs registry operations via direct API calls without requiring a local daemon or persistent storage.
- Lazy Manifest Resolution - Retrieves metadata and configuration files separately from heavy layer data to minimize network overhead.
- Image Pipeline Automation - Integrates container image manipulation into CI/CD workflows to automate tagging and uploading of build artifacts.
- Image Build and Analysis - Library and CLI tools for interacting with registries.
- Registry Clients - Library and CLI tools for manipulating registry images.
