Linux Host Maintenance
Docker does not remove unused Docker objects, such as images, containers, volumes, and networks. Piling up such objects may quickly fill up the storage space. It is essential to eliminate such dangling objects (often called garbage collection) to maintain the resources and health of the Docker host.
Container runtimes (Docker/Podman) provide the prune command option to clean up unused Docker objects. For more information, refer to the official documentation below.
Docker: Prune Unused Docker object
Podman: Podman System Prune
With unused objects, QCSA residues are also stored in the Linux Host's shared directory. QCSA objects, such as installed RPMs and temporary scan data, are stored in the shared directory.
Monitor the storage, arrange a quick downtime, and clean QCSA residues when needed.