与其他docker容器连接本地系统mongodb数据库

我开发了样本meanstack应用程序（sampledocker） . 我想在docker中运行此应用程序 . 我想将我的系统数据库（ my system ip address:192.168.1.174 ）Mongodb数据库连接到该docker应用程序 .

• docker build -t nitikishu / sampledocker

• docker push nitikishu / sampledocker

• docker pull nitikishu / sampledocker

• docker run -p 4200：4200 nitikishu / sampledocker

现在Docker容器有samplesocker应用程序映像 . 服务器页面有 mongoose.connect("mongodb://mongo:27017/dbname")

从这个env文件我传递这个mongodb路径到server.js（app.js）

My project structure is:

• SAMPLE

• node_modules

• 公众

• 控制器

• samplecontroller.js

• index.html

• index1.html

• dockerignore.txt

• Dockerfile

• env.Config

• docker-compose.yml

• package.json

• server.js

如何在docker中连接mongodb和samplesocker容器？这个db我想连接samplesocker容器 .

Unable to login to the application

Dockerfile:

FROM node:latest
RUN mkdir -p C:\Users\user2\Sample
WORKDIR C:\Users\user2\Sample
COPY package.json C:\Users\user2\Sample
RUN npm install
COPY  . .
EXPOSE 4200
CMD [ “npm”, “start” ]

docker-compose.file

version : '3'
services :
  sampledocker:
    build: .
    ports:
      - "4200:4200"
    depends_on:
      - mongo
  mongo:
    image: mongo:3.4.2
    ports:
      - "27017:27017"
    volumes:
      - data:/data/db
volumes:
  data:

server.js(main.js)

var express = require('express');
var session = require('express-session');
const bodyParser = require('body-parser');
const logger = require('morgan');
const chalk = require('chalk');
const errorHandler = require('errorhandler');
const dotenv = require('dotenv');
const path = require('path');
const mongoose = require('mongoose');
const MongoStore = require('connect-mongo')(session);
const passport = require('passport');
const expressValidator = require('express-validator');
var app = express();
var multer = require('multer');
var request = require('request');
var fs = require('fs');
dotenv.load({ path: '.env.Config' });
app.use(express.static(__dirname + "/public"));
app.set('views', __dirname + '\\public');
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
app.use(bodyParser.json());
mongoose.connect("mongodb://mongo:27017/dbname");
mongoose.connection.on('error', () => 
{
    console.log(error);
    process.exit();
});

app.use(session({
    resave: true,
    saveUninitialized: true,
    secret: process.env.SESSION_SECRET,
    store: new MongoStore({
        url:"mongodb://mongo:27017/dbname",
        autoReconnect: true
    })
}));

app.set('port', process.env.App_PORT || 3000);
app.listen(app.get('port'), () => {
    console.log('%s server running on port', chalk.green('✓'), app.get('port'));
    console.log('  Press CTRL-C to stop\n');
});