change: apply new APT keyring recommandations

tasks/main.yml

@@ -12,8 +12,10 @@
 
 # TODO-PI update for getting proper packages for Raspbian - add packages libffi-dev libssl-dev
 - name: Add Docker GPG key to APT
-  apt_key:
-    url: https://download.docker.com/linux/{{ ansible_distribution|lower }}/gpg
+  get_url:
+    url: "https://download.docker.com/linux/{{ ansible_distribution|lower }}/gpg"
+    dest: /etc/apt/trusted.gpg.d/docker.asc
+    mode: '0644'
   when: ansible_os_family == "Debian"
 
 - name: Add Docker repo to APT repositories for x86_64 architecture