The docker and containerd data directories can be set to a different path then the default.

.vscode/settings.json

@@ -1,3 +1,5 @@
 {
-        "ansible.python.interpreterPath": "/opt/local/bin/python3.10"
+        "ansible.python.interpreterPath": "/opt/local/bin/python3.10",
+        "python-envs.defaultEnvManager": "ms-python.python:system",
+        "python-envs.pythonProjects": []
 }

defaults/main.yml

@@ -25,6 +25,10 @@ docker_swarm_manager_main_node: false
 docker_run_as_docker_user: true
 docker_user_home: /home/docker
 docker_defaults_file: /etc/default/docker
+docker_data_dir: /var/lib/docker
+docker_containerd_data_dir: /var/lib/containerd
+# To enable the snapshotter when upgrading to version < 29 set the following to true
+docker_enable_overlayfs_snapshotter: false
 docker_enable_tcp_socket: false
 docker_tcp_socket_port: 2375
 docker_tls_api: true

handlers/main.yml

@@ -1,9 +1,15 @@
 ---
 - name: Restart docker
-  service: name=docker state=restarted
+  ansible.builtin.service:
+    name: docker
+    state: restarted
+
+- name: Restart containerd
+  ansible.builtin.service:
+    name: containerd
+    state: restarted
 
 - name: Restart cadvisor
   ansible.builtin.service:
     name: cadvisor
     state: restarted
-

tasks/docker_setup.yml

@@ -1,56 +1,72 @@
 ---
-- name: Docker configuration and service management
+- name: docker_setup | Docker configuration and service management
+  when: docker_install
+  tags: [docker]
   block:
-    - name: Install the Docker default options
+    - name: docker_setup | Install the Docker default options
       template: src=docker-default.j2 dest={{ docker_defaults_file }} owner=root group=root mode=0644
       when: ansible_service_mgr != 'systemd'
       notify: Restart docker
       tags: ['docker', 'docker_conf']
 
-    - name: Install the Docker daemon config
+    - name: docker_setup | Install the Docker daemon config
       template: src=daemon.json.j2 dest=/etc/docker/daemon.json owner=root group=root mode=0644
       notify: Restart docker
       tags: ['docker', 'docker_conf']
 
-    - name: Create the docker service systemd directory
+    - name: docker_setup | Create the docker service systemd directory
       file: dest=/etc/systemd/system/docker.service.d state=directory mode=0755
       when: ansible_service_mgr == 'systemd'
       tags: ['docker', 'docker_systemd', 'docker_conf']
 
-    - name: Install the Docker additional systemd unit
+    - name: docker_setup | Install the Docker additional systemd unit
       template:
         src: docker-systemd-override.conf.j2
         dest: /etc/systemd/system/docker.service.d/override.conf
         owner: root
         group: root
-        mode: 0644
+        mode: "0644"
       when: ansible_service_mgr == 'systemd'
       notify: Restart docker
       register: reload_systemd
       tags: ['docker', 'docker_systemd', 'docker_conf']
 
-    - name: systemd reload
+    - name: docker_setup | systemd reload
       command: systemctl daemon-reload
       when: reload_systemd is defined and reload_systemd is changed
       tags: ['docker', 'docker_systemd', 'docker_conf']
 
-    - name: Ensure that the service is started and enabled
+    - name: docker_setup | Ensure that the service is started and enabled
       service: name=docker state=started enabled=yes
 
+- name: docker_setup | Docker configuration and service management
   when: docker_install
-  tags: [docker]
-
-- name: Cron job that prunes the dangling images
+  tags: [docker, containerd, containerd_conf]
   block:
-    - name: Install a script that prunes the docker dangling images
+    - name: docker_setup | Add "beverage=lemon juice" outside a section in specified file
+      community.general.ini_file:
+        path: /etc/containerd/config.toml
+        option: root
+        value: "{{ docker_containerd_data_dir | default('/var/lib/containerd') }}"
+        owner: root
+        group: root
+        mode: "0644"
+        state: present
+      notify:
+        - Restart containerd
+        - Restart docker
+
+- name: docker_setup | Cron job that prunes the dangling images
+  block:
+    - name: docker_setup | Install a script that prunes the docker dangling images
       copy:
         src: docker-prune-dangling-images.sh
         dest: /usr/local/sbin/docker-prune-dangling-images
         owner: root
         group: root
-        mode: 0744
+        mode: "0744"
 
-    - name: Install a cron job that prunes the docker images
+    - name: docker_setup | Install a cron job that prunes the docker images
       cron:
         name: Prune docker images
         cron_file: docker-prune-images
@@ -60,7 +76,7 @@
         job: "/usr/local/sbin/docker-prune-dangling-images"
       when: docker_prune_dangling_images
 
-    - name: Disable the cron job that prunes the docker images
+    - name: docker_setup | Disable the cron job that prunes the docker images
       cron:
         name: Prune docker images
         cron_file: docker-prune-images
@@ -73,17 +89,17 @@
   when: docker_install
   tags: [docker, docker_prune_images]
 
-- name: Cron job that restart docker daemon daily
+- name: docker_setup | Cron job that restart docker daemon daily
   block:
-    - name: Install a script that restart the docker daemon
+    - name: docker_setup | Install a script that restart the docker daemon
       copy:
         src: docker-restart-daemon.sh
         dest: /usr/local/sbin/docker-restart-daemon
         owner: root
         group: root
-        mode: 0744
+        mode: "0744"
 
-    - name: Install a cron job that restart the docker daemon
+    - name: docker_setup | Install a cron job that restart the docker daemon
       cron:
         name: Restart docker daemon
         cron_file: docker-restart-daemon
@@ -94,7 +110,7 @@
         job: "/usr/local/sbin/docker-restart-daemon"
       when: docker_restart_daemon_cronjob
 
-    - name: Disable the cron job that restart the docker daemon
+    - name: docker_setup | Disable the cron job that restart the docker daemon
       cron:
         name: Restart docker daemon
         cron_file: docker-prune-images
@@ -108,17 +124,17 @@
   when: docker_install
   tags: [docker, docker_restart_daemon_cronjob]
 
-- name: Cron job that prunes the dangling volumes
+- name: docker_setup | Cron job that prunes the dangling volumes
   block:
-    - name: Install a script that prunes the docker dangling volumes
+    - name: docker_setup | Install a script that prunes the docker dangling volumes
       copy:
         src: docker-prune-dangling-volumes.sh
         dest: /usr/local/sbin/docker-prune-dangling-volumes
         owner: root
         group: root
-        mode: 0744
+        mode: "0744"
 
-    - name: Install a cron job that prunes the docker volumes
+    - name: docker_setup | Install a cron job that prunes the docker volumes
       cron:
         name: Prune docker volumes
         cron_file: docker-prune-volumes
@@ -129,7 +145,7 @@
         job: "/usr/local/sbin/docker-prune-dangling-volumes"
       when: docker_prune_dangling_volumes
 
-    - name: Disable the cron job that prunes the docker volumes
+    - name: docker_setup | Disable the cron job that prunes the docker volumes
       cron:
         name: Prune docker volumes
         cron_file: docker-prune-volumes
@@ -142,12 +158,3 @@
 
   when: docker_install
   tags: [docker, docker_prune_volumes]
-
-
-
-- block:
-    - name: Remove the docker user
-      user: name=docker state=absent
-
-  when: not docker_install
-  tags: [docker]

templates/daemon.json.j2

@@ -1,4 +1,10 @@
 {
+    "data-root": "{{ docker_data_dir }}",
+{% if docker_enable_overlayfs_snapshotter %}
+    "features": {
+      "containerd-snapshotter": true
+      },
+{% endif %}
 {% if docker_log_to_journal %}
     "log-driver": "journald",
 {% endif %}