Once installed and active, the SHOPWARE_ENV environment variable will be used to determine what colour to display in the backend. Values recognised are: dev, staging, preview and production. Other values are ignored.
Copy the contents of this repo to a new folder C3EnvironmentBanner in custom/plugins/ and install and activate as normal via the admin panel or command line.
To install via composer, add this repo to the repository area of composer.json and run the following command:
composer require c3/shopware-environment-banner
Then install and activate as normal.