Docker runs the app in production.

Dockerfile

@@ -14,4 +14,4 @@ COPY . .
 
 EXPOSE ${WEB_PORT}
 
-CMD [ "node", "app.js" ]
+CMD ["npm", "run", "start"]

package.json

@@ -3,6 +3,8 @@
   "version": "0.0.0",
   "main": "app.js",
   "scripts": {
+    "start": "NODE_ENV=production node app.js",
+    "dev": "NODE_ENV=development node app.js",
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "author": "",