[toc]

a nodejs sample of docker

build images

Create a Dockerfile for Node.js

# syntax=docker/dockerfile:1

FROM node:12.18.1
ENV NODE_ENV=production

WORKDIR /app

COPY ["package.json", "package-lock.json*", "./"]

RUN npm install --production

COPY . .

CMD [ "node", "server.js" ]

Create a .dockerignore file

node_modules

Build image

docker build --tag node-docker .

View local images

docker images

Tag images

docker tag node-docker:latest node-docker:v1.0.0

docker rmi node-docker:v1.0.0

run image as a container

docker run node-docker
# test
curl --request POST \
  --url http://localhost:8000/test \
  --header 'content-type: application/json' \
  --data '{"msg": "testing"}'

# run docker image
docker run --publish 8000:8000 node-docker

# Run in detached mode
docker run --detach --publish 8000:8000 node-docker
# List containers
docker ps
# stop docker
docker stop <docker-name>/<docker-tag>
# list containers whether they are stopped or started
docker ps -a
# restart docker images
docker restart <docker-name>/<docker-tag>
# remove docker images
docker rm <docker-name1> <docker-name2> <docker-name3>
# -d 释放终端 -p 映射网络端口 --name 修改语义化 image 名称
docker run -d -p 8000:8000 --name rest-server node-docker

use containers for development

loal database and containers

# 创建mongodb 的 data 目录 和 config 目录
docker volume create mongodb
docker volume create mongodb_config
# 建立网络
docker network create mongodb
# dockerHub 拉取并运行 mongodb 镜像
docker run -it --rm -d -v mongodb:/data/db \
  -v mongodb_config:/data/configdb -p 27017:27017 \
  --network mongodb \
  --name mongodb \
  mongo

添加 database 后，修改服务源码并手动启动 doker

第一步：修改服务源码

const ronin = require("ronin-server");
const mocks = require("ronin-mocks");
const database = require("ronin-database");
const server = ronin.server();

database.connect(process.env.CONNECTIONSTRING);
server.use("/", mocks.server(server.Router(), false, false));
server.start();

// 第二步： 装 nodejs 依赖包
npm install ronin-database
// 第三步： 重新打镜像
docker build --tag node-docker .
// 第四步： 重新运行docker镜像
docker run \
  -it --rm -d \
  --network mongodb \
  --name rest-server \
  -p 8000:8000 \
  -e CONNECTIONSTRING=mongodb://mongodb:27017/yoda_notes \
  node-docker
// 第五步：用curl进行网络请求测试
curl --request POST \
  --url http://localhost:8000/notes \
  --header 'content-type: application/json' \
  --data '{"name": "this is a note", "text": "this is a note that I wanted to take while I was working on writing a blog post.", "owner": "peter"}'

用 compose file 简化上面的步骤

第一步：创建 docker-compose.dev.yml 这个文件，这个文件可以简化 docker run 后面的参数

version: "3.8"

services:
  notes:
    build:
      context: .
    ports:
      - 8000:8000
      - 9229:9229
    environment:
      - SERVER_PORT=8000
      - CONNECTIONSTRING=mongodb://mongo:27017/notes
    volumes:
      - ./:/app
    command: npm run debug

  mongo:
    image: mongo:4.2.8
    ports:
      - 27017:27017
    volumes:
      - mongodb:/data/db
      - mongodb_config:/data/configdb
volumes:
  mongodb:
  mongodb_config:

第二步：接着在 package.json 文件的 script 里面添加

"debug": "nodemon --inspect=0.0.0.0:9229 server.js"

第三步： docker-compose 启动 docker 镜像

docker-compose -f docker-compose.dev.yml up --build

第四步： curl 测试

url --request GET --url http://localhost:8000/notes

连接到 debugger

第一步：浏览器打开 about:inspect

第二步： open dedicated devtools for node

第三步：添加本地源码 file 到浏览器中，并在指定位置打上断点

第四步： curl 测试

curl --request GET --url http://localhost:8000/foo

run tests

mkdir -p test

./test/test.js

var assert = require("assert");
describe("Array", function () {
  describe("#indexOf()", function () {
    it("should return -1 when the value is not present", function () {
      assert.equal([1, 2, 3].indexOf(4), -1);
    });
  });
});

docker-compose -f docker-compose.dev.yml up --build

curl --request POST \
  --url http://localhost:8000/test \
  --header 'content-type: application/json' \
  --data '{"msg": "testing"}'


curl http://localhost:8000/test

Install Mocha

npm install --save-dev mocha

Update package.json and Dockerfile to run tests

"scripts": {
  "test": "mocha ./**/*.js",
  "start": "nodemon --inspect=0.0.0.0:9229 server.js"
},

run docker test

docker-compose -f docker-compose.dev.yml run notes npm run test

Multi-stage Dockerfile for testing

Dockerfile

# syntax=docker/dockerfile:1
FROM node:14.15.4 as base

WORKDIR /code

COPY package.json package.json
COPY package-lock.json package-lock.json

FROM base as test
RUN npm ci
COPY . .
CMD [ "npm", "run", "test" ]

FROM base as prod
RUN npm ci --production
COPY . .
CMD [ "node", "server.js" ]

build for test

docker build -t node-docker --target test .

kokudolly / docker-demo Goto Github PK

docker-demo's Introduction

a nodejs sample of docker

build images

Create a Dockerfile for Node.js

Create a .dockerignore file

Build image

View local images

Tag images

run image as a container

use containers for development

loal database and containers

添加 database 后，修改服务源码并手动启动 doker

用 compose file 简化上面的步骤

连接到 debugger

run tests

Install Mocha

Multi-stage Dockerfile for testing

Configure CI/CD

Deploy app

Docker and Azure ACI

DOker and AWS ECS

Kubernetes

Recommend Projects

Recommend Topics

Recommend Org