add docker_services_external_networks and docker_services_external_volumes variables

tasks/docker.yml

@@ -1,8 +1,10 @@
 ---
 - name: add official GPG key
-  apt_key:
+  get_url:
     url: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
-    state: present
+    dest: /etc/apt/trusted.gpg.d/docker.asc
+    mode: '0644'
+    force: true
   tags: ['docker']
 
 - name: add repository
@@ -21,6 +23,7 @@
       - docker-compose-plugin
       - python3-docker
     state: present
+  ignore_errors: '{{ ansible_check_mode }}'
   tags: ['docker']
 
 - name: create docker-compose directory
@@ -35,6 +38,7 @@
     name: docker
     state: started
     enabled: true
+  ignore_errors: '{{ ansible_check_mode }}'
   tags: ['docker']
 
 - name: copy rsyslog config