make experimental docker stuff configurable in this role

tasks/main.yml

@@ -1,11 +1,13 @@
 - name: Ensure packages are installed
   become: true
+  check_mode: no
   apt:
     name:
       - python3-pip
       - apt-transport-https
       - ca-certificates
       - curl
+      - gnupg
       - gnupg-agent
       - software-properties-common
     state: present
@@ -34,6 +36,7 @@
       - docker-ce-cli
       - containerd.io
       - docker-compose
+      - docker-compose-plugin
     update_cache: true
     state: present
 

templates/daemon.json.j2

@@ -1,3 +1,4 @@
 {
-	   "data-root": "{{ docker_root | default('/var/lib/docker') }}"
-}
+	   "data-root": "{{ docker_root | default('/var/lib/docker') }}",
+	   "experimental": {{ docker_experimental | default (false) }}
+}