Get docker container IDs based on date and if they're exited or not.

dockerfilter.sh

#!/bin/bash
IFS=$'\n'
TODAY=$(/bin/date +"%Y-%m-%d")
#CONTAINERS=$(sudo docker ps -a -f ancestor=ubuntu --format "table {{.ID}} {{.CreatedAt}} {{.Status}}")

/usr/bin/docker ps -a -f ancestor=ubuntu --format "{{.ID}} {{.CreatedAt}} {{.Status}}" | while read cont
do
        IFS=' '
        array=($cont)

        if [[ ${array[1]} < $TODAY ]] && /bin/grep -q "Exited" <<<$cont
                then
                /bin/echo ${array[0]}
                fi
done