Add environment variables to the supervisord configuration since you need them for NodeJS apps.

defaults/main.yml

@@ -11,11 +11,14 @@ nodejs_app_root_path: "{{ web_root }}/{{ nodejs_app_name }}"
 nodejs_app_static_path: "{{ web_root }}/{{ nodejs_app_name }}/static"
 nodejs_app_hostname: localhost
 
-nodejs_app_supervisor_command: "PORT={{ nodejs_app_port }} node {{ nodejs_app_root_path }}/{{ nodejs_app_script }}"
+nodejs_app_supervisor_command: "node {{ nodejs_app_root_path }}/{{ nodejs_app_script }}"
 
 nodejs_version_family: "5.x"
 # Other valid value is 4.x
 nodejs_app_global_install:
-    - browserify
-    - babel-cli
-    - less
+  - browserify
+  - babel-cli
+  - less
+
+nodejs_app_envs:
+  port: "{{ nodejs_app_port }}"

meta/main.yml

@@ -33,3 +33,4 @@ dependencies:
     nsbase_app_service_stop_signal: QUIT
     nsbase_app_nginx_config: "{{ nodejs_app_nginx_config }}"
     nsbase_app_static_path: "{{ nodejs_app_static_path }}"
+    nsbase_app_env: "{{ nodejs_app_envs }}"