Learn how to install packages hosted on a private Gitlab server using Composer and GitLab tokens. This is primarily useful for those setting up CI/CD pipelines with private PHP packages.
Specify the environment in the config section of composer, allowing you to dev for a different environment.
Learn to create templates that you can then install using the composer create-project command.
Learn how to include your package within itself for testing and not have to keep pushing the code and composer updating.