7.1. Container Standards

7.1.1. OCI

The Open Container Initiative (OCI) is an industry standard for specifying container formats and runtimes. The current specifications proposed by OCI are:

• OCI Runtime Specification

• OCI Image Format

• OCI Distribution Specification

7.1.2. CRI

Container Runtime Interface (CRI) defines the interface between containers and images. Currently officially supported container runtimes include Docker, Containerd, CRI-O and frakti.

7.1.3. Reference Links

7.1.3.1. Documentation

• Introducing Container Runtime Interface (CRI) in Kubernetes

• cri-o

7.1.3.2. Implementation

• runc Reference implementation of runc OCI Runtime

• Kata Containers Kata Containers provides a high-performance hardware virtualized container runtime

• gvisor User-mode kernel-based container runtime implemented by gvisor Go

• buildkit The build project split from buildkit docker build