nextcloud-docs/node

What is Node.js?

Node.js is a software platform for scalable server-side and networking applications. Node.js applications are written in JavaScript, and can be run within the Node.js runtime on Mac OS X, Windows and Linux with no changes.

Node.js applications are designed to maximize throughput and efficiency, using non-blocking I/O and asynchronous events. Node.js applications run single-threaded, although Node.js uses multiple threads for file and network events. Node.js is commonly used for real time applications due to its asynchronous nature.

Node.js internally uses the Google V8 JavaScript engine to execute code, and a large percentage of the basic modules are written in JavaScript. Node.js contains a built-in asynchronous I/O library for file, socket and HTTP communication. The HTTP and socket support allows Node.js to act as a web server without additional web server software such as Apache.

wikipedia.org/wiki/Node.js

How to use this image

Create a Dockerfile in your nodejs app project.

FROM node:0.10.31-onbuild
# replace this with your application's default port
EXPOSE 8888
# replace this with your main "server" script file
CMD [ "node", "server.js" ]

Then build and run the docker image.

docker build -t my-nodejs-app
docker run -it --rm --name my-running-app my-nodejs-app

Run a single nodejs script

For many single file projects, it may not be convenient to write a Dockerfile for your project. In such cases, you can run a nodejs script by using the nodejs docker image directly.

docker run -it --rm --name my-running-script -v $(pwd):/usr/src/myapp -w /usr/src/myapp node:0.10.31 node your-daemon-or-script.rb