Module cache 

Modal image cache management.

This module provides functionality to cache Modal image IDs to avoid rebuilding images that haven’t changed. The cache is stored in {working_dir}/.offload/modal_images.json.

Cache Structure

The cache maps cache keys (like “default”, “rust”, or “dockerfile:/path/to/Dockerfile”) to image metadata including the Modal image ID and optional dockerfile hash.

Structs

ImageCache

Cache for Modal image IDs.

ImageCacheEntry

A cache entry for a Modal image.

Functions

compute_file_hash

Computes the SHA256 hash of a file.