Reproducible Python 3.12-slim container that installs the project
editable with dev deps. Adds pytest-asyncio to dev deps so async tests
run cleanly inside the container (host had it installed out-of-band).
scripts/docker-test.sh provides build, test, ask, replay, and shell
subcommands. The ask/replay/shell commands mount ~/secrets read-only
and ~/.marchwarden read-write so end-to-end runs persist traces back
to the host.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>