Node , NPM and docker

A follow up post. Using the offical node image to install npm packages and run an express app.

docker run -it —rm -v “$PWD”:/app -w /app node:9-alpine npm init The -it takes you to the terminal to fill in the package info. The –rm will remove the container. Once complete you should see a package.json in the local directory.

docker run —rm -v “$PWD”:/app -w /app node:9-alpine npm install express body-parser cookie-parser multer —save The above will install the packages in the local directory.

docker run —rm -p8081:8081 -v “$PWD”:/app -w /app node:9-alpine node index.js The above will run the app and remove the container when finished.

The following is the index.js var express = require(‘express’); var app = express(); app.get(’/’, function (req, res) { res.send(‘Hello World’); }) var server = app.listen(8081, function () { var host = server.address().address var port = server.address().port console.log(“Example app listening at http://%s:%s”, host, port) })