added option to set docker gpg key

tasks/setup-Debian.yml

@@ -15,7 +15,7 @@
 
 - name: Add Docker apt key.
   apt_key:
-    url: https://download.docker.com/linux/ubuntu/gpg
+    url: "{{ docker_apt_gpg_key }}"
     id: 9DC858229FC7DD38854AE2D88D81803C0EBFCD88
     state: present
   register: add_repository_key
@@ -26,7 +26,7 @@
   when: add_repository_key is failed
 
 - name: Add Docker apt key (alternative for older systems without SNI).
-  shell: "curl -sSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -"
+  shell: "curl -sSL {{ docker_apt_gpg_key }} | sudo apt-key add -"
   args:
     warn: false
   when: add_repository_key is failed

tasks/setup-RedHat.yml

@@ -9,7 +9,7 @@
 
 - name: Add Docker GPG key.
   rpm_key:
-    key: https://download.docker.com/linux/centos/gpg
+    key: "{{ docker_yum_gpg_key }}"
     state: present
 
 - name: Add Docker repository.