Adapt for Ubuntu and prepare for migration to Hetzner

roles/docker/tasks/main.yml

@@ -88,6 +88,19 @@
     register: docker_version
     changed_when: no
 
+  - name: Install python3-pip
+    apt:
+      name: python3-pip
+      state: latest
+      cache_valid_time: 3600
+    register: result
+    retries: 3
+    until: result is success
+
+  - name: Install docker-compose
+    pip:
+      name: docker-compose
+
   - name: Printing Docker version
     debug: var=docker_version