![]() ![]() This tutorial aims to simulate a a couple of realistic scenarios you might encounter in a work environment, and show how Docker helps to solve those issues. That said, it can be challenging to really demonstrate the need for Docker to those new to the development world who haven't yet experienced a lot of the problems that it solves. So you already know in advance that you will not have any issue with missing dependencies or incorrect versions. These containers are designed to be extremely portable which means that you can quickly deploy them anywhere, and also scale up your app quickly by simply deploying more copies of your container.Īll you need to do is define the requirements for your environment in the Dockerfile (for example Ubuntu 18, Node.js, etc) and every time your container is started on any machine, it will recreate exactly that environment. It uses a concept it calls containers which are lighter weight (require less resources) than full on virtual machines to create the environment for your application. You can accomplish this as simply as including a single file called Dockerfile with your project. We will use Docker Compose to connect and network each container together so that they are easy to share among project contributors, and deploy to whatever hosting service you've chosen.ĭocker is a tool that allows you package the environment for running your application along with the application itself. ![]() In this tutorial you will learn what Docker is and what purpose it serves by building a fullstack Node.js app complete with frontend and PostgreSQL database. If you find this tutorial helpful, please share it with your friends and colleagues!įor more tutorials like this, follow me on Twitter All code from this tutorial as a complete package is available in this repository. ![]()
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