[ansible] update roles

ansible/roles/build/tasks/main.yml

@@ -0,0 +1,11 @@
+---
+- name: "Copy config"
+  copy:
+    src: "{{ deploy_release_dir }}/config.{{ inventory_hostname }}.json"
+    dest: "{{ deploy_release_dir }}/config.json"
+    remote_src: true
+
+- name: "Gulp build"
+  command: "/usr/local/bin/gulp default"
+  args:
+    chdir: "{{ deploy_release_dir }}"