title: Apache Airflow Docker : How to install external airflow provider packages
body: <p>I am running Apache Airflow on docker. I want to install an airflow provider package for spark. My docker compose yml file looks like <a href="https://airflow.apache.org/docs/apache-airflow/2.1.4/docker-compose.yaml" rel="nofollow noreferrer">this</a>. I want to add Spark as my connection type when i try to create a new connection in airflow. How can i do this?</p>