This repository contains a Docker compose file for running BookStack. It contains a sample file with some variables that can be changed to your liking.
The docker-compose.yml file can be downloaded and placed on a location of your liking. Make sure to have a separate folder for the configuration files and a place to store your downloads. You should definitely change the passwords in the Docker Compose file to something more secure.
You can launch the file with docker-compose up. After it has finished starting, which should not take very long, you can go to your browser and check if it is running properly.
You can check by going to 127.0.0.1:6543 if you're on the same machine. Replace 127.0.0.1 with the ip address in question if you have it hosted on another machine
After you are sure that it all works, you can keep BookStack running in the background, just run docker-compose up -d.
The first time you start Bookstack up, you will be greeted with a login screen. The default credentials are as follows:
Username: admin@admin.com
Password: password
You should change that as soon as possible.
For a more in depth guide on how this works, you can go to selfhostedheaven.com.