NodeJS无法连接到Docker容器内的MYSQL[重复]

version: '3'
services:
  node:
    build: ./app
    environment:
      - NODE_ENV=production
      - PORT=3000
      - MYSQL_HOST=ppshein-mysql
      - MYSQL_USER=root
      - MYSQL_PASSWORD=ppshein123456
    ports:
      - "3000:3000"
    networks:
    - my-bridge-network
    depends_on:
      - "${MYSQL_HOST}"
    container_name: ppshein-api
  db:
    image: mysql:8.0.14
    environment:
      - MYSQL_ROOT_PASSWORD=ppshein123456
    networks:
    - my-bridge-network
    container_name: ppshein-mysql
networks:
  my-bridge-network:
    driver: bridge

这是mysql sequelize的配置文件,

"production": {
    "username": "root",
    "password": "ppshein123456",
    "database": "database_production",
    "host": "ppshein-mysql",
    "dialect": "mysql",
    "logging": false
}

这是 Dockerfile 对于NodeJS应用程序,

FROM node:9.10.1
ENV NODE_ENV=development
COPY ./ /var/www
WORKDIR /var/www/
RUN yarn install && yarn add sequelize-cli -g
EXPOSE 3000
CMD /bin/bash ./wait-for-it.sh ppshein-mysql:3306 -- npm run docker

最后,我遇到了以下错误消息:

已加载配置文件“config/config.json”。使用环境 “生产”。2019年1月26日星期六01:03:45 GMT续集不推荐 现在不推荐使用基于字符串的运算符。请使用基于符号的 操作员为了更好的安全性,请访问 http://docs.sequelizejs.com/manual/tutorial/querying.html#operators 在 节点_modules/sequelize/lib/sequelize。js:242:13