Add role for adding docker nodes to swarm

roles/swarm/tasks/install.yaml

@@ -0,0 +1,26 @@
+---
+- name: Install Docker repository
+  become: true
+  ansible.builtin.get_url:
+    url: https://download.docker.com/linux/centos/docker-ce.repo
+    dest: /etc/yum.repos.d/docker-ce.repo
+    owner: root
+    group: "{{ ansible_user }}"
+    mode: 0644
+  register: _docker_repo_status
+
+- name: Install docker repository GPG key
+  become: true
+  ansible.builtin.rpm_key:
+    key: https://download.docker.com/linux/centos/gpg
+    state: present
+
+- name: Install Docker
+  become: true
+  ansible.builtin.dnf:
+    state: present
+    name:
+      - docker-ce
+      - docker-ce-cli
+      - containerd.io
+    update_cache: "{{ _docker_repo_status.changed }}"