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ancha execution manages the local container runtime that playground runs and container agents use. Plain ancha run with a host-process agent does not need it.

ancha execution doctor

Reports whether a Docker engine is available. Without one, it exits 3:
Output
A passing doctor only shows that Docker answers; prepare and ancha playground readiness check the rest.

ancha execution prepare

A one-time setup per project, not per task. It needs Docker with Compose and Python 3.12 or later. It installs the runtime under .ancha/harbor-runtime in the current project and builds the image that serves the tools inside attempts.

ancha execution list

Lists containers Ancha created and still holds, for example after an interrupted run.

Docker context

Ancha uses the Docker context in ANCHA_DOCKER_CONTEXT if set, otherwise a context named colima-ancha if one exists, otherwise your current context. It never downloads images during an attempt: pull the base images you use in advance.