Added capabilty to configure docker/containerd root path

defaults/main.yml

@@ -29,3 +29,9 @@ docker_yum_gpg_key: https://download.docker.com/linux/centos/gpg
 
 # A list of users who will be added to the docker group.
 docker_users: []
+
+# configuration
+docker_default_config: true
+docker_root_path: ""
+containerd_root_path: ""
+docker_native_cgroup: ""

tasks/main.yml

@@ -25,3 +25,19 @@
 
 - include_tasks: docker-users.yml
   when: docker_users | length > 0
+
+- name: Configure docker
+  template:
+    src: daemon.json.j2
+    dest: /etc/docker/daemon.json
+    mode: 0666
+  notify: restart docker
+  when: not docker_default_config
+
+- name: Configure containerd
+  template:
+    src: config.toml.j2
+    dest: /etc/containerd/config.toml
+    mode: 0666
+  notify: restart docker
+  when: not docker_default_config

templates/config.toml.j2

@@ -0,0 +1,31 @@
+#   Copyright 2018-2020 Docker Inc.
+
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+
+#       http://www.apache.org/licenses/LICENSE-2.0
+
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+
+disabled_plugins = ["cri"]
+
+root = "{{ containerd_root_path }}"
+#state = "/run/containerd"
+#subreaper = true
+#oom_score = 0
+
+#[grpc]
+#  address = "/run/containerd/containerd.sock"
+#  uid = 0
+#  gid = 0
+
+#[debug]
+#  address = "/run/containerd/debug.sock"
+#  uid = 0
+#  gid = 0
+#  level = "info"

templates/daemon.json.j2

@@ -0,0 +1,4 @@
+{
+	"data-root": "{{docker_root_path}}",
+    "exec-opts": ["native.cgroupdriver={{docker_native_cgroup}}"]
+}