Install latest docker/docker-compose via pip. Proposed as fix for #67 (#69)

* Install latest docker/docker-compose via pip. Proposed as fix for #67

* Combine docker and docker-compose pip installs in to one task

lemmy.yml

@@ -59,16 +59,12 @@
       state: latest
       update_cache: true
 
-  - name: Install Docker Module for Python
+  - name: Install Docker Module and docker-compose for Python
     pip:
-      name: docker
-
-  - name: Install or upgrade docker-compose
-    get_url: 
-      url : "https://github.com/docker/compose/releases/download/1.25.5/docker-compose-Linux-x86_64"
-      dest: /usr/local/bin/docker-compose
-      mode: 'a+x'
-      force: yes
+      name:
+        - docker
+        - docker-compose
+      state: latest
 
   - name: copy docker config
     copy: src='../files/docker-daemon.json' dest='/etc/docker/daemon.json' mode='0644'