[ethercalc] NPM install

roles/ethercalc/tasks/main.yml

@@ -33,6 +33,15 @@
   retries: 3
   until: apt_result is succeeded
 
+- name: Install EtherCalc
+  npm:
+    name: ethercalc
+    global: true
+    state: latest
+  register: npm_result
+  retries: 3
+  until: npm_result is succeeded
+
 - name: Install EtherCalc systemd unit
   template:
     src: systemd/system/ethercalc.service.j2