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Discover how to set up Node.js for scalable real-time applications in a streamlined environment → Learn more now
Node.js is a cross-platform, open-source JavaScript runtime environment that executes JavaScript code outside the browser, for example on servers or in command-line tools. Based on the V8 engine, it supports asynchronous, event-driven I/O, making it extremely efficient for building scalable network and real-time applications.
The “JavaScript everywhere” paradigm allows developers to use a single language both in the backend and frontend.
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Before setting up Node.js, you should prepare your system. This includes updating your operating system to the latest version and installing all necessary dependencies. This preparation ensures a stable environment and helps avoid issues during or after installation.
To keep your system running with the latest software and security updates, always start by performing a system update. Run the following command:
sudo apt update && sudo apt upgrade -y
This ensures your system has all current security patches and software versions before proceeding.
After the update is complete, you can proceed with installing dependencies. Node.js is provided and run on your system via various Docker containers. Docker must be installed first. Run the following commands:
curl -fsSL https://get.docker.com -o get-docker.sh
sh get-docker.sh
A detailed step-by-step guide for installing and using Docker is available in our Docker tutorial.
Now that all prerequisites are met and preparations are complete, you can start installing the Node.js application.
To use Node.js in an isolated environment, first download the official Alpine-based image. Use the following command to get the latest Node.js 22 image on your system, ready for container deployments:
docker pull node:22-alpine
Then you can start a container based on this image and open a shell session inside it. Start the container with an interactive shell like this. The --rm option ensures the container is automatically removed when you exit, keeping your host clean.
docker run -it --rm --entrypoint sh node:22-alpine
Inside the container, check the installed Node.js version with node -v, which should display v22.19.0. Check the npm version with npm -v, expected to be 10.9.3. This confirms the image contains the correct versions of Node.js and npm and is ready to use immediately.
After starting the Node.js container, it is recommended to configure important Node.js settings directly in the environment. A common approach is defining environment variables, for example:
export NODE_ENV=production
This activates production mode, enabling performance optimizations and adjusting logging. For development purposes, you can set NODE_ENV=development to get more detailed error messages and debugging features.
A well-structured project directory is important, starting with a configuration file you create with the following command:
npm init -y
This generates a package.json file that defines dependencies, scripts, and metadata for your project. It is the central configuration file for every Node.js application.
Install dependencies with npm install <package>, while development dependencies are added with npm install <package> --save-dev. The scripts section in package.json allows you to define custom commands like npm start or npm run build to simplify execution and project management.
For advanced setups, you can customize Node.js with .npmrc or .nvmrc files to configure private registries, cache options, or a specific Node.js version. This ensures your application runs consistently across different environments.
Congratulations! You have now successfully installed and configured Node.js on your VPS/Dedicated Server. We also recommend checking out the following resources that can help you with server configuration:
Do you have specific questions not answered here? Our team is available daily for further questions or support – don’t hesitate to contact us! 🙂
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