Connection refused with MYSQL db when node app dockerized

I have a problem with connecting my node app container to MySQL database. When -compose up I keep getting error from container logs:
server-1 | Unable to connect to database ConnectionRefusedError [SequelizeConnectionRefusedError]: connect ECONNREFUSED 172.20.0.2:3306

Here is my db instance:

const { Sequelize } = require("sequelize");
require("dotenv").config();

const sequelize = new Sequelize("admin", "password", "table", {
  host: "mysql2",
  dialect: "mysql",
  port: 3306,
});

module.exports = sequelize;

Docker compose file:

services:
  server:
    build:
      context: .
    ports:
      - "3001:3001"
    restart: always
    depends_on:
      - "mysql"

  mysql:
    image: mysql:8.0.0
    container_name: mysql2
    restart: always
    environment:
      MYSQL_USER: admin
      MYSQL_ROOT_PASSWORD: password
    ports:
      - "3307:3306"

and Dockerfile:

Docker file: 

FROM node:20-alpine

WORKDIR /server

COPY package.json .

RUN npm install --production

COPY . .

EXPOSE 3001

CMD ["node", "index.js"]

I tried creating just a MYSQL container and have been able to initialize db and connect to port in workbench. I tried having MySQL container with the node container in the same docker network, and I was getting the same errors. I tried with different versions, node:18, 20 and 22 alpine, and MySQL 8.0, 9.0.1 and 8.0.33.

I also tried to docker inspect the MYSQL container, finding gateway ip, using that ip as a host, all it would do is change the errors to that ip.

Just wanna point out I am using Sequelize in my app.

Alternative Docker compose file:

services:
  server:
    build:
      context: .
    ports:
      - "3001:3001"
    depends_on:
      mysql:
        condition: service_healthy

  mysql:
    image: mysql:8.0.0
    container_name: mysql2
    environment:
      MYSQL_USER: admin
      MYSQL_ROOT_PASSWORD: password
      MYSQL_PASSWORD: password
    ports:
      - "3307:3306"
    healthcheck:
      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-p'password'"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 30s