To run containers from docker-compose.Docker files for running a basic Laravel application. But if you already have an existing application, you will have to go through a couple of steps: 1. I am new to laravel and docker, so feel free to criticize ) At its heart, Sail is the docker-compose. In other words, a computer or server capable of running docker containers.Once you have the environment set up, we can start to see how to install Laravel in docker.