docker daily operation and maintenance
1. Query disk usage in Docker
docker system df
2. Delete the Docker image that is not used by the container
[Use with caution] The command cleanup is more clean and thorough, and can delete all Docker images that are not used by containers.
docker system prune -a
3. Delete the unstarted container
By querying all containers, we can find those that are not started, and those that are not needed can be deleted directly
docker ps -a
(1) Delete all non-running containers; running ones cannot be deleted
docker rm $(docker ps -a -q)
(2) Delete the container whose status is Exited according to the status of the container
docker rm $(docker ps -qf status=exited)