Parameterize configuration

db/index.js

@@ -1,10 +1,10 @@
 const { Pool } = require('pg')
 const pool = new Pool({
-  user: 'admin',
-  host: '127.0.0.1',
-  database: 'platoo',
-  password: 'm1y2s3q4l5',
-  port: 5432,
+  user: process.env.user || 'admin',
+  host: process.env.host || '127.0.0.1',
+  database: process.env.database || 'platoo',
+  password: process.env.password,
+  port: process.env.port || 5432,
 })
 module.exports = {
   query: (text, params, callback) => {