docker下node环境搭建

初始化⼀个NodeJs程序

以下操作必须已经安装了NodeJS。

⾸先创建⼀个空⽂件夹。并创建以下⽂件：

server.js

package.json

Dockerfile

.dockerignore

然后在server.js写⼊

const koa = require('koa');

const app = new koa();

app.use(async ctx =>{

	ctx.body = "Hello docker";

});

app.listen(3000);

在package.json中写⼊

{

"name":"docker_demo",

"version":"0.1.0",

"private:true",

"script":{

"start":"node server.js"

},

"dependencies":{

"koa":"^2.5.0"

}

}

npm start

创建dockerfile文件

Dockerfile是由⼀系列命令和参数构成的脚本，⼀个Dockerfile⾥⾯包含了构建整个image的完整命

令。Docker通过docker build执⾏Dockerfile中的⼀系列命令⾃动构建image. 在.dockerignore⽂件⾥

⾯写⼊代码。表示过滤该类型的⽂件。类似git的.gitignore

.dockerignore

# Logs

logs

*.log

npm-debug.log*

# Runtime data

pids

*.pid

*.seed

# Directory for instrumented libs generated by jscoverage/JSCover

lib-cov

# Coverage directory used by tools like istanbul

coverage

# nyc test coverage

.nyc_output

# Grunt intermediate storage (http://gruntjs.com/creatingplugins#storing-task-files)

.grunt

# node-waf configuration

.lock-wscript

# Compiled binary addons (http://nodejs.org/api/addons.html)

build/Release

# Dependency directories

node_modules

jspm_packages

# Optional npm cache directory

.npm

# Optional REPL history

.node_repl_history

.idea

.node_modules

node_modules

.vscode

[root@Sandbox-N ~]# docker build -t docker_demo .

Sending build context to Docker daemon 39.94kB

Step 1/7 : FROM node:8.9-alpine

---> 406f227b21f5

Step 2/7 : MAINTAINER robin

---> Using cache

---> 78d6cdbcfee2

Step 3/7 : ADD . /app/

---> 2cb30678612d

Step 4/7 : WORKDIR /app

Removing intermediate container e51377081039

---> c2b7d0f37d2d

Step 5/7 : RUN npm install

---> Running in da0c3946ca8d

npm notice created a lockfile as package-lock.json. You should commit

this file.

added 38 packages in 3.323s

Removing intermediate container da0c3946ca8d

---> eecee87f10e2

Step 6/7 : EXPOSE 3000

---> Running in f3973cc168a4

Removing intermediate container f3973cc168a4

---> 2671a4c6deb4

Step 7/7 : CMD ["npm", "start"]

---> Running in dec529f754aa

Removing intermediate container dec529f754aa

---> 6ec73793d353

Successfully built 6ec73793d353

Successfully tagged docker_demo:lates

等待镜像构造完成。然后使⽤ images命令查看镜像

此时可以看到images已经构造完成。现在开始启动images，并测试。

# 启动镜像 -d表示后台执⾏，-p 9000:3000表示指定本地的9000端⼝隐射到容器内的3000端，

docker_demo为镜像名称

docker run -d -p 9000:3000 docker_demo

#查看容器

docker ps

如果此时本地⽆法打开。可以使⽤log命令查看⽇志。根据⽇志修改对应出现的对⽅

巴特西

docker下node环境搭建

初始化⼀个NodeJs程序

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