So you’ve followed through a proper tutorial and built an app in Node and run it on your computer, but you want it to run 24×7 and can’t have the computer open that long! The problem is your computer is even not that powerful to run just a simple app on it 24×7. Here is where Docker comes in. You can install Docker into any machine and run your apps in the background on some remote server! Docker makes it possible to run apps and scripts in an isolated environment that has been made specifically for that operation. So in…