使用Sequelize的Docker Compose无法连接到Postgres容器(Can't connect to Postgres container with Docker Compose from Sequelize)

 我无法从运行节点和Sequelize的单独docker服务连接到默认的Postgres图像。 
 
 我假设我的容器设置不正确，也许我的连接信息也不正确因为我在运行docker-compose --build时docker-compose --build我无法使用连接信息连接到我的数据库： 
 
Host: 0.0.0.0
Port: 5432
User: guy
Password: password
Database: engauge
 
 错误消息是 
 
Unable to connect to the database: { SequelizeConnectionRefusedError: connect ECONNREFUSED 0.0.0.0:5432
at /usr/src/app/node_modules/sequelize/lib/dialects/postgres/connection-manager.js:98:20
 
 我正在运行一个看起来像这样的YML文件 
 
version: '2' # specify docker-compose version

# Define the services/containers to be run
services:
  web: # name of the first service
    build: . # specify the directory of the Dockerfile
    ports:
      - "3000:3000" # specify port forewarding
    links:
      - database
  database: # name of the third service
    image: postgres # specify image to build container from
    ports:
      - "5432:5432" # specify port forewarding
    environment:
         - POSTGRES_USER:'guy'
         - POSTGRES_PASSWORD:'password'
         - POSTGRES_DB:'engauge'
 
 我在我的Web服务中的连接看起来像这样 
 
const sequelize = new Sequelize('postgresql://guy:password@0.0.0.0/engauge');

I can't connect to the default Postgres image from a separate docker service running node & Sequelize. 
 
I'm assuming that my setup of the container is not correct and also perhaps my connection info is incorrect too because I when I run docker-compose --build I cannot connect to my database using the connection info:
 
Host: 0.0.0.0
Port: 5432
User: guy
Password: password
Database: engauge
 
The error message is
 
Unable to connect to the database: { SequelizeConnectionRefusedError: connect ECONNREFUSED 0.0.0.0:5432
at /usr/src/app/node_modules/sequelize/lib/dialects/postgres/connection-manager.js:98:20
 
I am running with a YML file that looks like this
 
version: '2' # specify docker-compose version

# Define the services/containers to be run
services:
  web: # name of the first service
    build: . # specify the directory of the Dockerfile
    ports:
      - "3000:3000" # specify port forewarding
    links:
      - database
  database: # name of the third service
    image: postgres # specify image to build container from
    ports:
      - "5432:5432" # specify port forewarding
    environment:
         - POSTGRES_USER:'guy'
         - POSTGRES_PASSWORD:'password'
         - POSTGRES_DB:'engauge'
 
And my connection from within my web service looks like this
 
const sequelize = new Sequelize('postgresql://guy:password@0.0.0.0/engauge');

原文：https://stackoverflow.com/questions/42741703