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Docker clean-up script for cron
#!/bin/bash
# Do not run if removal already in progress.
pgrep "docker rm" && exit 0
# Remove Dead and Exited containers.
docker rm $(docker ps -a | grep "Dead\|Exited" | awk '{print $1}'); true
# It will fail to remove images currently in use.
docker rmi $(docker images -qf dangling=true); true
# Clean up unused docker volumes
docker volume rm $(docker volume ls -qf dangling=true); true
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