docker-node测试

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搭建环境

使用 CentOS 7

  1. 安装 docker
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    yum -y install docker-ce
  2. 启动 docker
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    systemctl start docker
  1. 安装 node

创建 node 应用

  1. 选择一个目录进行创建
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mkdir docker_web_app
cd docker_web_app
npm init -y
  1. 修改 package.json 文件
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{
    "name": "docker_web_app",
    "version": "1.0.0",
    "description": "Node.js on Docker",
    "author": "First Last <first.last@example.com>",
    "main": "server.js",
    "scripts": {
        "start": "node server.js"
    },
    "dependencies": {
        "express": "^4.16.1"
    }
}
  1. 安装依赖
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npm install
  1. 创建 server.js 文件
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'use strict';
const express = require('express');
// Constants
const PORT = 8080;
const HOST = '0.0.0.0';
// App
const app = express();
app.get('/', (req, res) => {
    res.send('Hello world\n');
});
app.listen(PORT, HOST);
console.log(`Running on http://${HOST}:${PORT}`);

配置 docker

  1. 创建 Dockerfile 文件
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FROM node:10

# Create app directory
WORKDIR /usr/src/app

# Install app dependencies
# A wildcard is used to ensure both package.json AND package-lock.json are copied
# where available (npm@5+)
COPY package*.json ./

RUN npm install
# If you are building your code for production
# RUN npm ci --only=production

# Bundle app source
COPY . .

EXPOSE 8080
CMD [ "node", "server.js" ]
  1. 创建 .dockerignore 文件
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node_modules
npm-debug.log
  1. 拉取 node 镜像
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docker pull hub-mirror.c.163.com/library/node:10

运行

  1. 构建镜像并标记为指定名称 myname/node-web-app
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docker build -t myname/node-web-app .
  1. 查看镜像
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docker images
  1. 运行镜像
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docker run -p 49160:8080 -d myname/node-web-app
  1. 查看镜像ID和日志
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docker ps
docker logs
  1. 进入镜像
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docker exec -it 镜像ID /bin/bash