Here is a simple example of a composer plugin.
plugin ├── src │ └── Plugin.php ├── composer.json ├── composer.lock { "require": { "cslant/composer-plugin-example": "dev-main" }, "repositories": [ { "type": "git", "url": "https://github.com/cslant/composer-plugin-example.git" } ] }composer updatels vendor/cslant/composer-plugin-examplecomposer require cslant/composer-plugin-example