docker 官方 getting-started BUG

Using Docker Compose 一節
使用compose 啟動的mysql 容器不能訪問，出現錯誤

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

我們知道，這是因為mysql 授權遠程登錄沒有設置，但是我們通過 docker exec 仍然無法連接mysql

解決辦法

通過在 docker-compose.yml 中聲明掛載 docker-entrypoint-initdb.d 來解決，讓mysql鏡像 在初始化時執行增加遠程登錄權限的sql

docker-compose.yml

version: "3.7"

services:
  app:
    image: node:12-alpine
    command: sh -c "yarn install && yarn run dev"
    ports:
      - 3000:3000
    working_dir: /app
    volumes:
      - ./:/app
    environment:
      MYSQL_HOST: mysql
      MYSQL_PORT: 3306
      MYSQL_USER: root
      MYSQL_PASSWORD: ${MYSQL_ROOT_PASSWORD}
      MYSQL_DB: todos

  mysql:
    image: mysql:5.7
    volumes:
      - "./conf/my.cnf:/etc/my.cnf"
      - "./init:/docker-entrypoint-initdb.d/"
    environment: 
      MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
      MYSQL_ROOT_HOST: ${MYSQL_ROOT_HOST}
      MYSQL_DATABASE: todos

init/init.sql

use mysql;
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'root';
create database  if not exists todos;