MySQL docker container HostNotFoundError with Sequelize and node.js - mysql

Question

I am trying to use my MySQL docker container with node.js using Sequelize. But I keep getting HostNotFoundError. I am able to connect to the database with MySQL Workbench.
I also tried putitng "127.0.0.1 localhost" into my host file.
Error:
C:\projects\todo-backend\node_modules\sequelize\lib\dialects\mysql\connection-manager.js:96
throw new SequelizeErrors.HostNotFoundError(err);
^
HostNotFoundError [SequelizeHostNotFoundError]: getaddrinfo ENOTFOUND
"localhost"
docker-compose.yml
version: '3.8'
networks:
mysql_app:
external: true
x-common-variables: &common-variables
MYSQL_USER: todo
MYSQL_PASSWORD: s3cret
MYSQL_DATABASE: todos
REACT_APP_SERVER_PORT: 8000
services:
mysql:
image: mysql
restart: always
environment:
<<: *common-variables
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: todos
ports:
- "3307:3306"
networks:
- mysql_app
volumes:
- C:/projects/docker/mysql:/data/pc
.env:
MYSQL_DB: "todos",
MYSQL_USERNAME: "todo",
MYSQL_PASSWORD: "s3cret",
MYSQL_HOST: "localhost",
MYSQL_DIALECT: "mysql"
MYSQL_PORT: 3307
Here I already tried "mysql", "localhost" and "127.0.0.1".
db.config.js:
const Sequelize = require('sequelize');
const sequelize = new Sequelize(process.env.MYSQL_DB, process.env.MYSQL_USERNAME, process.env.MYSQL_PASSWORD, {
host: process.env.MYSQL_HOST,
dialect: process.env.MYSQL_DIALECT,
operatorsAliases: 0,
port: process.env.MYSQL_PORT,
});
const db = {};
db.Sequelize = Sequelize;
db.sequelize = sequelize;
db.todo = require("../model/todo.model.js")(sequelize, Sequelize);
module.exports = db;
When I remove the host then it tries to connect to 172.19.0.1, which is the ip-address inside the docker container.
server.js
require('dotenv').config()
const express = require('express');
const app = express();
const bodyParser = require('body-parser');
const cors = require('cors');
const PORT = process.env.PORT || 8080;
app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
const db = require("./app/config/db.config.js");
db.sequelize.sync({ force: true }).then(() => {
console.log("Drop and Resync with { force: true }");
});
require("./app/route/todo.route.js")(app);
app.listen(PORT, () => {
console.log(`Server is running on port: ${PORT}`)
});