This documentation provides examples for specific use cases. Please [open an issue](https://github.com/sendgrid/php-http-client/issues) or make a pull request for any use cases you would like us to document here. Thank you! # Table of Contents * [Docker](#docker) # Docker You can run the example code at `examples/example.php` in a Docker container. From the root directory: ```bash cp examples/.env_sample .env ``` Update the `.env` file with your SendGrid API Key. If you don't have one, you can get one [here](https://sendgrid.com/free?source=php-http-client). Add the `.env` file to your `.gitignore` file if you are publishing your code publically. ``` source .env docker build --build-arg sendgrid_apikey=$SENDGRID_API_KEY -t client . docker run client php examples/example.php ``` You should see a list of your SendGrid API Keys.