Docker Compose is a tool that allows you to configure and manage Docker containers via a single compose file. Docker Compose makes it easier to configure and manage multiple Docker containers simultaneously.
This allows you to set up a web application consisting of a combination of a web server, a database, and a caching layer. With Docker Compose, you can run these different components in separate containers and then start, stop, and manage them with a single command.
A simple application of Docker Compose might look like this:
- You build a web application in PHP that uses an SQL database.
- You create two Docker containers, one for the PHP application and one for the MySQL database.
- Then you create a docker-compose.yml file that includes the configuration for both containers and defines the connection between the two containers.
- With a single command (docker-compose up), you can then start and connect both containers.