fix: keep all lines under 160 chars for yamllint

Use set_fact to build the Docker repo line in parts instead of
one long inline string.

ansible/roles/docker/tasks/main.yml

@@ -18,9 +18,28 @@
     mode: '0755'
   when: ansible_facts["os_family"] == "Debian"
 
+- name: Set Docker repo variables
+  ansible.builtin.set_fact:
+    docker_distro: >-
+      {{ 'ubuntu' if ansible_facts['distribution'] == 'Ubuntu' else 'debian' }}
+    docker_arch: >-
+      {{ ansible_facts['architecture']
+      | regex_replace('x86_64', 'amd64')
+      | regex_replace('aarch64', 'arm64') }}
+  when: ansible_facts["os_family"] == "Debian"
+
+- name: Build Docker repo line
+  ansible.builtin.set_fact:
+    docker_repo: >-
+      deb [arch={{ docker_arch }}
+      signed-by=/etc/apt/keyrings/docker.asc]
+      https://download.docker.com/linux/{{ docker_distro }}
+      {{ ansible_facts['distribution_release'] }} stable
+  when: ansible_facts["os_family"] == "Debian"
+
 - name: Add Docker GPG key
   ansible.builtin.get_url:
-    url: "https://download.docker.com/linux/{{ 'ubuntu' if ansible_facts['distribution'] == 'Ubuntu' else 'debian' }}/gpg"
+    url: "https://download.docker.com/linux/{{ docker_distro }}/gpg"
     dest: /etc/apt/keyrings/docker.asc
     mode: '0644'
     force: false
@@ -28,7 +47,7 @@
 
 - name: Add Docker apt repository
   ansible.builtin.apt_repository:
-    repo: "deb [arch={{ ansible_facts['architecture'] | regex_replace('x86_64', 'amd64') | regex_replace('aarch64', 'arm64') }} signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/{{ 'ubuntu' if ansible_facts['distribution'] == 'Ubuntu' else 'debian' }} {{ ansible_facts['distribution_release'] }} stable"
+    repo: "{{ docker_repo }}"
     filename: docker
     state: present
     update_cache: true