Edit db.js

config/db.js

@@ -2,9 +2,9 @@ const mysql = require("mysql2/promise")
 
 // Create connection pool
 const pool = mysql.createPool({
-  host: process.env.DB_HOST || "localhost",
+  host: process.env.DB_HOST || "db",
   user: process.env.DB_USER || "root",
-  password: process.env.DB_PASSWORD || "",
+  password: process.env.DB_PASSWORD || "t4cCbSGBXw",
   database: process.env.DB_NAME || "test_dashboard3",
   waitForConnections: true,
   connectionLimit: 10,