add remote docker access

tasks/main.yml

@@ -8,6 +8,32 @@
 - name: Install Docker.
   package: name={{ docker_package }} state={{ docker_package_state }}
 
+- name: enable remote docker access
+  block:
+    - name: add docker.service.d/override.conf override
+      copy:
+        dest: /etc/systemd/system/docker.service.d/startup_options.conf
+        content: |
+          # /etc/systemd/system/docker.service.d/override.conf
+          [Service]
+          ExecStart=
+          ExecStart=/usr/bin/dockerd -H fd:// -H tcp://0.0.0.0:2375
+      register: docker_override
+    - name: reload docker daemon
+      systemd:
+        daemon_reload: yes
+      when: docker_override is changed
+
+    - name: restart docker service
+      service:
+        name: docker
+        state: restarted
+        daemon_reload: yes
+      when: docker_override is changed
+
+  when: docker_remote_access is defined and docker_remote_access is true
+
+
 - name: Ensure Docker is started and enabled at boot.
   service:
     name: docker