Why Docker?

Docker is a tool that helps developers run applications smoothly in different places, like your computer, a server, or the cloud. It does this by packing everything an application needs into a "container." Think of a container like a little package that has your application and everything it needs to run, no matter where you put it. This means you won't hear someone say, "but it works on my computer" because, with Docker, if it works in one place, it works everywhere.

Main Points

• Consistency: Docker makes sure your application run the same way everywhere.
• Simplicity: It packs everything your app needs into one container, making it super simple to move around.
• Flexibility: You can run Docker containers anywhere - on your laptop, a big server, or in the cloud.
• Efficiency: Docker is great for working on big projects or many small ones. It is very scalable and helps everything run smoothly and quickly.

In short, Docker is like a magic box that makes sure your application can run anywhere without any problems. It's really helpful for developers who want to make sure their app works well no matter where it is. It simplifies the setup process, eliminating the need for manual installation of databases like PostgreSQL or other services.