Question

Why should we use Docker?

Answer 1

The following are the major reasons that specify why you should use Docker:

• Docker allows you to use the same versioning and packaging that platforms like Git and NPM offer for server applications. Since Docker containers are just a single instance of Docker images, version tracking different builds of your container is a breeze. Also, it's much easier to manage all of your dependencies because everything is contained.
• With Docker, your build environment would be similar to your production environment. Also, there won't be any dependency issues when running the same container on other machines.
• You wouldn't have to think about reconfiguring the server or reinstalling any of the dependencies if you were to connect another server to your cluster. With container orchestration or management platforms like Swarm and Kubernetes, Docker can run multiple servers with ease.
• Docker makes it possible to prepare the code for deployment on new services. You can bundle up your web server and simply run it by creating an Nginx container, bundle up your API server and deploy it in a Node.js container, and run your database as its own container. You can run all three of these Docker containers on the same computer. Also, it is simple to switch these containers to a new server. You can switch one of these containers to a new server or allocate it across a cluster if you need to scale.
• If you want to run different applications on a single VPS, Docker will help you save money. If each app has its own set of dependencies, the server will quickly become cluttered. Docker allows you to run several different containers on the same server without worrying about a container affecting the other containers or the host.