Install NodeJS
Below are the instructions to install nodejs on a debian based distribution such as Ubuntu.
Ubuntu 18.04 - Native Packages
sudo apt update && \
sudo apt install npm node-gyp nodejs-dev libssl1.0-dev -y
10.x Latest Script
The relevant docs can be found here.
curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
sudo apt-get install -y nodejs
Running the webserver
Add the bin folder to your path, then simply execute:
node [serverFile.js]
This will run node on a single thread. If you have multiple vCPUs then you may wish to run Nginx or Apache as the HTTP handler which calls node.