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99b1a3 theophile 2026-02-06 10:08:33
docker prune & check for zombie containers
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# Maintenance
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## Containers
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Regularly check that containers whose services have either moved or been removed, are not still running
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```bash
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# List containers running.
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docker compose ls
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# Kill a container that should not still be running.
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# The <id> is found in the list above.
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docker kill <id>
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```
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## Space
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### Pruning
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> Docker takes a conservative approach to cleaning up unused objects (often referred to as "garbage collection"), such as images, containers, volumes, and networks. These objects **are generally not removed unless you explicitly ask Docker to do so**. This can cause Docker to use extra disk space. For each type of object, Docker provides a prune command. In addition, you can use docker system prune to clean up multiple types of objects at once.
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- [Prune unused Docker objects Docker Docs](https://docs.docker.com/engine/manage-resources/pruning/)