Automated updating of containers via cron

watchtower.sh

#!/bin/sh

# Automated updating of containers via cron
# Leverages watchtower for auto image cleanup and robustness.

if [ -t 1 ] ; then
        echo "Running in an interactive shell"
else
        exec 1>/dev/null
        exec 2>/dev/null
fi

docker pull containrrr/watchtower

docker run --rm --name watchtower-runonce \
    -v /var/run/docker.sock:/var/run/docker.sock \
    containrrr/watchtower \
        --stop-timeout 30s \
        --cleanup \
        --rolling-restart \
        --include-stopped \
        --run-once \
     $*