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>
