Core Concepts

The rightsize crate is the backend-agnostic core: the Container builder and its RAII ContainerGuard, Network for alias-based connectivity, the Wait readiness strategies, and MountableFile for getting host data into a guest. Everything in this section applies identically regardless of which backend (rightsize-msb or rightsize-docker) ends up running the container — that’s the whole point of the SandboxBackend trait boundary (see How It Works).

• Containers & Guards — the builder, the RAII lifecycle, and the two-tier cleanup story.
• Wait Strategies — the four built-in readiness checks and when to reach for a custom one.
• Networking — cross-container alias resolution and its limits on the microVM backend.
• Files & Resources — mounting host files into a container, and memory limits.