How can connect database with mysql? [closed]

version: "3"

services:
  db:
    image: mysql:5.7.34
    command: --init-file /var/lib/docker/volumes/db/init.sql --innodb-use-native-aio=0 --explicit_defaults_for_timestamp=false
    volumes:
      - ./db:/var/lib/docker/volumes/db
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: test
      MYSQL_DATABASE: test
      MYSQL_USER: test
      MYSQL_PASSWORD: test
      MYSQL_ROOT_HOST: '%'
    ports:
      - 3306:3306

  adminer:
    image: adminer
    restart: always
    ports:
      - 8081:8080
    depends_on:
      - db
  app:
    build:
      context: .
      dockerfile: Dockerfile.dev
    volumes:
      - ./src:/app/src
    ports:
      - "8000:8000"
    depends_on:
      - db

I have a docker compose like this. When I run, I can’t connect with db. It showed ERR:
ER_HOST_NOT_PRIVILEGED: Host '172.18.0.3' is not allowed to connect to this MySQL server.

I can connect if config cmd: GRANT ALL PRIVILEGES ON . TO ‘test’@’%’ IDENTIFIED BY ‘test’ WITH GRANT OPTION;

I want to connect without cmd grant because sometimes it can connect without cmd config. What should I fix this docker?

Connect DB without config cmd