Docker builds node. JS Web App (with port mappings)

Source: Internet
Author: User
Tags install node

1. Create a new directory src, and enter the SRC directory

mkdir Src[[email protected] documents]$ CD src/

2. Create Package.json and Index.js files with the following contents:

Package.json

[Email protected] documents]$mkdirSrc[[email protected] documents]$ CD src/[email protected] src]$CatPackage.json {"name":"Docker-centos-hello",  "Private":true,  "version":"0.0.1",  "Description":"node. JS Hello World app on CentOS using Docker",  "author":"Gideon Xie <[email protected]>",  "Dependencies": {    "Express":"3.2.4"  }}

Index.js

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);

3. Create Dockfile

[Email protected] src]$CatDockerfile from centos:centos7# Enable EPEL fornode. jsRUN  Yum install -y epel- Release# Install node. js and npmRUN  Yum install - y npm# Bundle app sourceCOPY. / src# Install app dependenciesRUN CD /src; npm installEXPOSE  8080CMD ["node", "  /src/index.js"  ][[email protected] src]$

4. Building a build image using Docker build

[Email protected] src]$Docker build-t gideon/centos-node- hello. Sending build context to Docker daemon4.096kbsending Build context to Docker daemon Step0: From Centos:centos7--->7322fbe74aa5step1: RUNYum Install-Y epel-Release---> Runninginch858c0e3e9a22loaded plugins:fastestmirrordetermining fastest mirrors* base:mirrors.yun-idc.com* extras:mirrors.yun-idc.com*updates:mirrors.nwsuaf.edu.cnResolving Dependencies-Running Transaction Check---> Package epel-release.noarch0:7-5Would be installed-finished Dependency resolutiondependencies resolved================================================================================Package Arch Version Repository Size================================================================================Installing:epel-release Noarch7-5Extras -ktransaction Summary================================================================================Install1packagetotal Download Size: -k NPM http $Https//registry.npmjs.org/qs/-/qs-0.6.4.tgzNPM WARN engine [email protected]1.0. -: Wanted: {"node":"<0.9.0"} (current: {"node":"v0.10.36","NPM":"1.3.6"}) [email protected]3.2.4node_modules/Express├──[email protected]0.0.1├──[email protected]0.1.0├──range[Email protected]0.0.4├──cookie[Email protected]1.0.1├──buffer[Email protected]0.2.1├──[email protected]0.0.5├──[email protected]0.6.1├──[email protected]0.3.4├──[email protected]0.1.0([email protected]1.2.6) ├──[email protected]2.2.0([email protected]0.7.1) └──[email protected]2.7.9([email protected]0.0.1, [email protected]0.6.4, [email protected]0.2.0, [email protected]1.0. -) --->66738118fe5dremoving Intermediate Container cad428ec3167step5: EXPOSE8080---> Runninginch9ee7937e5835--->f6ccd16494acremoving Intermediate Container 9ee7937e5835step6: CMD node/src/Index.js---> Runninginch9ca19e7392e9--->ae5f980eea52removing Intermediate container 9ca19e7392e9successfully built Ae5f980eea52[[email protected] src]$ 

5. View my images

[[email protected] src]$ docker images REPOSITORY TAG IMAGE ID CRE ATED VIRTUAL Sizegideon/centos-node-hello latest ae5f980eea52 about a minute ago408Mbnodejs_hello/node Latest 2DAAC5743DAA theMinutes ago544.7Mbgideon/nodejs Latest f30730d7c2603Days ago544.7Mbnginx Latest 6886fb5a9b8d6Days ago132.8Mbubuntu Latest D2A0ECFFE6FA2Weeks ago188.3Mbcentos Centos7 7322fbe74aa55Weeks ago172.2Mbcentos Latest 7322fbe74aa55Weeks ago172.2Mbhello-world Latest 91c95931e5523Months ago910B[[email protected] src]$

6. Run the image you just generated and map the container's 8080 port to the host's 49161 port

 49161:8080 -D gideon/centos-node- Hello

7. In the native input localhost:49161, access the Helloword app.

Note : Add the Epel library to CentOS 7 and use the Yum install epel-release directly (CentOS 5/ 6 You need to download the corresponding RPM package and install it).

Reference: http://docs.docker.com/examples/nodejs_web_app/

Http://www.rackspace.com/knowledge_center/article/install-epel-and-additional-repositories-on-centos-and-red-hat

Docker builds node. JS Web App (with port mappings)

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.