optional user addition

README.md

@@ -27,6 +27,7 @@ All variables which can be overridden are stored in [defaults/main.yml](defaults
 | `docker_no_proxy` | "" | Comma-separated list of hosts which won't use HTTP proxy |
 | `docker_version` | "17.06" | docker version which should be installed on target server. Can use `latest` for updates |
 | `docker_default_config` | [ storage-driver: devicemapper, log-level: info ] | Docker daemon configuration |
+| `docker_users` | [] | Add users to docker group |
 
 ## Example
 

defaults/main.yml

@@ -13,3 +13,7 @@ docker_version: "17.06"
 docker_default_config:
   storage-driver: devicemapper
   log-level: info
+
+docker_users: []
+# docker_users:
+#   - "{{ ansible_env['SUDO_USER'] | default(ansible_user_id) }}"

tasks/configure.yml

@@ -34,3 +34,10 @@
     src: docker.j2.service
     dest: /etc/systemd/system/docker.service
   notify: restart docker
+
+- name: Add privileged users to docker group
+  user:
+    name: "{{ item }}"
+    groups: docker
+    append: yes
+  with_items: "{{ docker_users }}"