Only rebuild when code changes

roles/codimd/handlers/main.yml

@@ -0,0 +1,9 @@
+---
+# Build front-end bundle
+- name: Build front-end for CodiMD
+  command: npm run build
+  args:
+    chdir: /var/local/codimd/codimd
+  become: yes
+  become_user: codimd
+

roles/codimd/tasks/main.yml

@@ -13,6 +13,7 @@
     version: 1.2.1
   become: yes
   become_user: codimd
+  notify: Build front-end for CodiMD
 
 # Setup dependencies and configs
 - name: Install CodiMD depedencies
@@ -22,14 +23,6 @@
   become: yes
   become_user: codimd
 
-# Build front-end bundle
-- name: Build front-end for CodiMD
-  command: npm run build
-  args:
-    chdir: /var/local/codimd/codimd
-  become: yes
-  become_user: codimd
-
 # Connection to database
 - name: Connect CodiMD to PostgreSQL db
   template: