Created the database configuration

server/config/database.js

@@ -0,0 +1,16 @@
+const {Sequelize} = require('sequelize');
+
+let defaultOptions = {logging: false, query: {raw: true}};
+
+const hostname = process.env.DB_HOSTNAME?.split(":");
+
+let options = process.env.DB_DATABASE ? {
+    dialect: 'mysql',
+    host: hostname[0] || 'localhost',
+    username: process.env.DB_USERNAME || 'root',
+    password: process.env.DB_PASSWORD || null,
+    database: process.env.DB_DATABASE,
+    port: hostname[1] || 3306
+} : {dialect: 'sqlite', storage: 'data/storage.db'};
+
+module.exports = new Sequelize({...options, ...defaultOptions});