added support for aarch64 and ubuntu release in variables

roles/docker_host/tasks/ubuntu.yml

@@ -7,14 +7,19 @@
     pkg:
     - apt-transport-https
     - ca-certificates
-    - curl 
+    - curl
     - software-properties-common
 
 - name: Add docker repo key
   shell: curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -
 
-- name: add repo for docker
-  shell: echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable" | tee /etc/apt/sources.list.d/docker.list
+- name: add repo for docker for x86_64
+  shell: echo "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list
+  when: ansible_architecture == 'x86_64'
+
+- name: add repo for docker for aarch64
+  shell: echo "deb [arch=arm64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list
+  when: ansible_architecture == 'aarch64'
 
 - name: Update repositories cache
   apt:
@@ -45,4 +50,4 @@
   shell: curl -s https://api.github.com/repos/docker/compose/releases/latest | grep browser_download_url | grep docker-compose-linux-x86_64 | grep -v sha256 | cut -d '"' -f 4 | wget -O /usr/local/bin/docker-compose -qi -
 
 - name: make compose executable
-  shell: chmod +x /usr/local/bin/docker-compose
+  shell: chmod +x /usr/local/bin/docker-compose