Maintenance

Containers

Regularly check that containers whose services have either moved or been removed, are not still running

# List containers running.
docker compose ls
# Kill a container that should not still be running.
# The <id> is found in the list above.
docker kill <id>

Space

Pruning

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.

• Prune unused Docker objects Docker Docs