我对 Docker 还比较陌生。我刚建立了一个 Dockerfile 和一个 docker-compose.yml . 由于某些原因，docker无法运行此脚本。每当运行此脚本时，它都会遍历所有sql文件并迁移该文件

# !/bin/bash

DB_NAME="database_name"
DB_USER="username"
DB_PASS="password"
DB_HOST="localhost"

# get current version

GET_DATABASE_VERSION="SELECT name FROM version TOP 1"

# 

echo "Getting data version"
version=$(mysql -h$DB_HOST -u$DB_USER -p$DB_PASS $DB_NAME -e "SELECT name FROM version")

# trim string to get current version name

version=${version:5}
x="./config/scripts/migration/$version"
echo $version
MIGRATION_PATH="./config/scripts/migration/*"

# get migration file for newer version

for filename in $MIGRATION_PATH -maxdepth 2
do
    if [[ -f $filename ]]; then
        if [[ "$filename" > "$x" ]] || [ "$filename" == "$x" ]; then
            echo "Running migration file: $filename"
            mysql -h$DB_HOST -u$DB_USER -p$DB_PASS $DB_NAME < $filename
        fi
    fi
done

我不断收到错误信息 ./config/scripts/migrate_local.sh: line 25: mysql: command not found 这是哪条线 mysql -h$DB_HOST -u$DB_USER -p$DB_PASS $DB_NAME < $filename .
有人知道怎么解决这个问题吗？这是你的名字 Dockerfile 以及 docker-compose.yml ，我正在使用 sudo docker-compose up --build 跑。
dockerfile文件

FROM node:8
MAINTAINER Tri Nguyen "me@mydomain.com"

RUN mkdir -p /usr/src
WORKDIR /usr/src

COPY package.json /usr/src
RUN npm install
RUN npm rebuild node-sass --force
COPY . /usr/src

EXPOSE 3000 8000
CMD [ "npm", "start" ]

docker-compose.yml公司

version: "2"
services:
  universe:
    build: .
    working_dir: /usr/src
    environment:
    - NODE_ENV=default
    - PORT=3000
    volumes:
    - /usr/src
    ports:
    - "3000:3000"
    - "8000:8000"
    links:
    - redis
    - mysql

  redis:
    image: redis
    volumes:
    - /data/redis:/data

  mysql:
    image: mysql:5.7
    environment:
      MYSQL_ROOT_PASSWORD: "root"
      MYSQL_DATABASE: "database_name"
      MYSQL_USER: "username"
      MYSQL_PASSWORD: "password"
    volumes:
    - /data/mysql:/var/lib/mysql

我使用的更新 winston 不过，作为我的记录者，它根本不起作用， console.log 很好用。这可能是错误：

universe_1  |   errno: 'ECONNREFUSED',
universe_1  |   code: 'ECONNREFUSED',
universe_1  |   syscall: 'connect',
universe_1  |   address: '127.0.0.1',
universe_1  |   port: 3307,
universe_1  |   fatal: true