Explictly install docker.io package

New docker-compose-v2 package no longer depends on docker.io[1].
Our tools kinda rely on /usr/bin/docker being there (for now!).

[1] https://git.launchpad.net/ubuntu/+source/docker-compose-v2/commit/?id=767feadc0c6d8530abfa30fa13a4b7a88bbb0cf2

Change-Id: Iffea25529cf792d91d0c903526d1fb213f09a338

playbooks/roles/install-docker/tasks/Ubuntu.noble.yaml

@@ -8,6 +8,9 @@
   apt:
     name:
       - docker-compose-v2
+      # "new" releases of docker-compose-v2 don't depend on this
+      # but our playbooks rely on it being there.
+      - docker.io
       - podman
       - uidmap
       - slirp4netns
@@ -25,7 +28,7 @@
     state: present
 
 - name: Disable docker daemon service
-  # docker-compose-v2 depends on the docker service. Disable it.
+  # We want /usr/bin/docker but don't need or want the docker service
   become: true
   service:
     name: docker
@@ -33,7 +36,7 @@
     enabled: false
 
 - name: Disable docker socket service
-  # docker-compose-v2 depends on the docker service. Disable it.
+  # We want /usr/bin/docker but don't need or want the docker socket
   become: true
   service:
     name: docker.socket