Add Docker cleanup script and update README

- Introduced a new script, docker_cleanup.sh, for cleaning up unused Docker containers, images, and volumes to free up disk space.
- Updated README.md to include instructions for using the Docker cleanup script, emphasizing its utility and caution regarding data removal.

README.md

@@ -168,6 +168,16 @@ This script will:
 4.  Ask if you want to re-run the n8n workflow import (useful if you skipped this during the initial installation or want to refresh the community workflows).
 5.  Restart all services with the new updates.
 
+## Cleaning up Docker
+
+If you need to free up disk space, you can run the Docker cleanup script. This script removes all unused Docker containers, images, and volumes.
+
+```bash
+sudo bash ./scripts/docker_cleanup.sh
+```
+
+This can be useful for removing old images and freeing up space, but be aware that it will remove all unused data.
+
 ## Important Links
 
 - Based on a project by [coleam00](https://github.com/coleam00/local-ai-packaged)

scripts/docker_cleanup.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# This script is intended for cleaning up the Docker system.
+# It removes all unused containers, images, networks, and volumes.
+# Use with caution, as this action is irreversible.
+
+echo "Starting Docker cleanup..."
+
+# The 'docker system prune' command removes:
+# - all stopped containers
+# - all networks not used by at least one container
+# - all "dangling" (unreferenced) images
+# - all build cache
+#
+# Additional flags:
+# -a, --all:     Remove all unused images, not just dangling ones.
+# --volumes:   Remove all unused volumes.
+# -f, --force:   Do not prompt for confirmation.
+
+docker system prune -a --volumes -f
+
+echo "Docker cleanup completed successfully."
+