docker nodejs 基本应用
1. 安装docker 环境
2. nodejs 应用布局
package.json
{
"name": "docker-centos-hello",
"private": true,
"version": "0.0.1",
"description": "Node.js Hello world app on CentOS using docker",
"author": "Daniel Gasienica <daniel@gasienica.ch>",
"dependencies": {
"express": "3.2.4"
}
}
3. index.js 使用express
var express = require('express');
// Constants
var PORT = 8080;
// App
var app = express();
app.get('/', function (req, res) {
res.send('Hello world\n');
});
app.listen(PORT);
console.log('Running on http://localhost:' + PORT);
4. Dockerfile文件创建
FROM centos:centos6 # Enable Extra Packages for Enterprise Linux (EPEL) for CentOS RUN yum install -y epel-release # Install Node.js and npm RUN yum install -y nodejs npm # Install app dependencies COPY package.json /src/package.json RUN cd /src; npm install # Bundle app source COPY . /src EXPOSE 8080 CMD ["node", "/src/index.js"]
5. 创建镜像
docker build -t dalong/centos-node .
6. 运行创建的镜像
docker run -p 49160:8080 -d dalong/centos-node
其中8080 为容器node 的端口 49160 是docker 宿主环境暴露的端口
7. 测试的效果
curl -i localhost:49160 HTTP/1.1 200 OK X-Powered-By: Express Content-Type: text/html; charset=utf-8 Content-Length: 12 Date: Tue, 26 Jan 2016 06:55:32 GMT Connection: keep-alive Hello world
