Why do we need Docker Compose when there is Dockerfile (I am a newbie at using Docker)? Am I missing something?

Question

Why do we need Docker Compose when there is Dockerfile (I am a newbie at using Docker)? Am I missing something?

Answer 1

The reason for using Docker is used to define and start running multi-container Docker applications. It is very easy to configure Docker, there would be YAML file to configure your application’s services/networks/volumes etc., Then, with a single command, you can create and start all the services from the compose configuration.

Here are some key steps that you must follow:-

1. You need to define Dockerfile for your app’s environment.

2. You need to define docker-compose.yml for the services that make up your app services.

3. You should run docker-compose up and Compose starts and runs your entire app.

If you want to learn more about Docker then I would suggest you must take up the following Docker Training Course, this course will help you master Docker. For your reference, I am also mentioning a video tutorial which you must watch to learn all the basics about Docker.