install docker compose

roles/install_docker/tasks/main.yml

@@ -7,6 +7,7 @@
 - name: Add docker repo
   apt_repository:
     repo: deb [arch=amd64] https://download.docker.com/linux/debian buster stable
+    # TODO replace by "... /linux/debian $(lsb_release -cs) stable"
     state: present
 
 - name: Install docker
@@ -20,3 +21,10 @@
   register: apt_result
   retries: 3
   until: apt_result is succeeded
+
+- name: Install docker-compose
+  get_url:
+    url: https://github.com/docker/compose/releases/download/1.28.0/docker-compose-Linux-x86_64 
+    # TODO: replace by "...1.28.0/docker-compose-$(uname -s)-$(uname -m)"
+    dest: /usr/local/bin/docker-compose
+    mode: '0755'