Add deploy_users to docker group

tasks/docker.yml

@@ -51,3 +51,15 @@
     url: https://github.com/docker/compose/releases/download/1.22.0/docker-compose-Linux-x86_64
     dest: /usr/local/bin/docker-compose
     mode: 744
+
+- name: Create docker group
+  group:
+    name: docker
+    state: present
+
+- name: Add deploy user to docker group
+  user:
+    name: "{{ item.username }}"
+    groups: docker
+    append: yes
+  with_items: '{{ deploy_users }}'