add task to copy license file

tasks/setup.yml

@@ -13,6 +13,13 @@
         mode: 0644
       notify: __drone_restart
 
+    - name: Copy license key file is defined
+      copy:
+        src: "{{ droneci_license_key }}"
+        dest: "{{ droneci_service_directory }}/{{ droneci_license_key | basename }}"
+        mode: 0600
+      when: droneci_license_key is defined
+
     - name: Ensure drone ci containers are up and running
       docker_service:
         project_src: "{{ droneci_service_directory }}"