Docker CLI in the image (static client for a mounted host socket)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,9 @@ until 1.0, minor versions may contain breaking changes.
 
 ### Added
 
+- The image contains the Docker CLI (static client). With the host's `/var/run/docker.sock`
+  mounted (and its group), admins' agents and terminals can use the host's Docker;
+  `scripts/move-server.sh --docker-sock` sets this up on a new host.
 - `scripts/move-server.sh --tools-dir DIR`: agent home, users' homes and `/tmp` on a separate disk.
 
 ## [v202611-00005] – 2026-11-09