我有一个docker-compose.yml文件：
版本：“3”

services:
  db:
    image: mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_ROOT_USER: root
      MYSQL_DATABASE: bl
    ports:
      - "3306:3306"
    volumes:
      - ./data:/var/lib/mysql

  server:
    env_file: "./server/.env"
    build:
      context: ./server
      dockerfile: ./Dockerfile
    image: "server"
    ports:
      - "5000:5000"
    depends_on:
      - db

Dockerfile：

FROM node:lts-alpine

WORKDIR /server

COPY . .
COPY package*.json ./
COPY .env ./ 

RUN yarn install

EXPOSE 5000
EXPOSE 3306

ENV NODE_ENV=docker

RUN yarn typeorm:migrate
RUN yarn typeorm:run-migrations

CMD ["yarn", "start"]

当尝试构建这两个时，我在这一行得到一个错误：RUN yarn typeorm:migrate .
这是我得到的错误：

> [7/8] RUN yarn typeorm:migrate:                                                                                             
#10 0.857 yarn run v1.22.19                                                                                                    
#10 0.943 $ yarn create:migrate-repo && yarn run typeorm -- -d ./src/systems/typeOrm.config.ts migration:generate ./src/migrations/migration
#10 1.344 $ mkdir -p ./src/migrations
#10 1.757 warning From Yarn 1.0 onwards, scripts don't require "--" for options to be forwarded. In a future version, any explicit "--" will be forwarded as-is to the scripts.
#10 1.769 $ ts-node ./node_modules/typeorm/cli -d ./src/systems/typeOrm.config.ts migration:generate ./src/migrations/migration
#10 7.524 Error during migration generation:
#10 7.527 Error: connect ECONNREFUSED 127.0.0.1:3306
#10 7.527     at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1494:16) {
#10 7.527   errno: -111,
#10 7.527   code: 'ECONNREFUSED',
#10 7.527   syscall: 'connect',
#10 7.527   address: '127.0.0.1',
#10 7.527   port: 3306,
#10 7.527   fatal: true
#10 7.527 }
#10 7.565 error Command failed with exit code 1.
#10 7.565 info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
#10 7.594 error Command failed with exit code 1.
#10 7.594 info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
------

发生错误的原因是服务器无法与db映像建立连接。
这是我的DataSource：

export const appDataSource = new DataSource({
  type: "mysql",
  host,
  port,
  username: rootUser,
  password,
  database,
  entities: [Company, Order],
  migrationsTableName: "migrations",
  migrations: [`${__dirname}/../migrations/*.ts`],
});

下面是我特灵做的事情的列表。为了解决这个问题：
1.在两个映像之间创建网桥。它不起作用。

version: "3"

services:
  db:
    image: mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_ROOT_USER: root
      MYSQL_DATABASE: bl
    ports:
      - "3306:3306"
    volumes:
      - ./data:/var/lib/mysql
    networks:
      - my-network

  server:
    env_file: "./server/.env"
    build:
      context: ./server
      dockerfile: ./Dockerfile
    image: "server"
    ports:
      - "5000:5000"
    depends_on:
      - db
    networks:
      - my-network

networks:
  my-network:
    driver: bridge

1.将host的名称更改为我的db映像的名称（有网桥和没有网桥）。
1.我甚至试图获得db图像的直接IP，但没有成功。

docker inspect db | grep IPAddress
            "SecondaryIPAddresses": null,
            "IPAddress": "",
                    "IPAddress": "172.23.0.2",