Image Format

Ocre container images follow the Open Container Initiative (OCI) format where possible, with some modifications to support the needs of constrained, embedded devices. The manifest format is modeled after the OCI Image Manifest format and conforms to the Wasm OCI Artifact layout specifications.

Ocre containers can be stored either as a single zip file or as a set of files in a directory, providing flexibility in how they are distributed and managed. The container format uses the Wasm OCI Artifact layout as its config.mediaType, ensuring compatibility with standard OCI tooling while maintaining the specific requirements for WebAssembly modules in embedded environments.

Learn More

To fully understand the Ocre container format, explore these detailed specifications.

Image Components: Learn about the core elements that make up an Ocre container.
Image Manifest: Understand how the manifest file organizes and references container components.
Image Configuration: Discover how to configure container execution, permissions, and runtime behavior.