Make the volume mapping explicit: the right-hand mount path is where the app writes. WORKDIR is /app, so code writing to ./cache lands in /app/cache (this mount); same for /app/logs and /app/config. Removes ambiguity about which side of the volume line the code targets. Verified: mkdocs build --strict clean. Signed-off-by: disqualifier <dev@disqualifier.me>