Docker

Docker is a planned execution backend.

Scripts can already call Docker directly through exec("docker", [...]) when the host has Docker installed. A Docker backend would be different: it would run each script command inside a declared container environment.

Target Shape

A future backend should preserve the command contract:

docker run <backend-options> <image> <file> <arg>...

The backend would own image selection, volume mounts, working directory, environment, user mapping, and container cleanup.

Good Fit

• tools that are easier to install once in an image than on every laptop
• Linux-only command-line tools
• reproducible smoke tests for generated actions
• local service tests that need a nearby container network

Non-Goals

Docker support should not turn Hollywood into a workflow emulator. It should only route exec(file, args) through a declared container environment.

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