btasker/tidy_old_docker_images

Docker Image Tidy

Check for docker images that are no longer used, and are over a certain age then list or delete them.

This works like docker image prune except it works on systems where prune is unavailable for whatever reason.

Usage

Usage is simple:

-l          List images available to be pruned
-k          Prune containers

Env vars:

    IGNORE_NAMES            Container names to ignore, pipe seperated
    AGE_THRESHOLD           Minimum age of containers to kill

Example

export IGNORE_NAMES='myrootimg|dnshandler'
./docker_prune.sh -l # List candidates
./docker_prune.sh -k # Delete them