Pulls the latest image for each container in DAILY_RESTART_CONTAINERS before docker_daily_restart.sh runs. Containers stay running during the pull — no extra downtime. Mirrors the weekly update pattern exactly. Toggle: DAILY_CONTAINER_UPDATES=true/false in master.conf. Pull failures are non-fatal — the daily restart proceeds regardless. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>