This initialization action installs a binary release of Docker on a Google Cloud Dataproc cluster. After installation, it will add the yarn user to the special docker group so that YARN-executed applications can access Docker.

⚠️ NOTICE: See best practices of using initialization actions in production.

1. Use the gcloud command to create a new cluster with this initialization action.

   REGION=<region>
   CLUSTER_NAME=<cluster_name>
   gcloud dataproc clusters create ${CLUSTER_NAME} \
       --region ${REGION} \
       --initialization-actions gs://goog-dataproc-initialization-actions-${REGION}/docker/docker.sh

2. Docker is installed and configured on all nodes of the cluster (both master and workers). You can log into the master node and run a test command to see that it works:

   sudo docker run hello-world

   Or, to run as the yarn user would:

   sudo su yarn
   docker run hello-world