add Docker to technology used

Author: RNWTenor

documentation/docs/.vuepress/public/celery.png

@@ -55,7 +55,11 @@ Amazon Elastic Container Service (Amazon ECS) is a highly scalable, high-perform
 
 [Read more about ECS](https://aws.amazon.com/ecs/)
 
+<technology image="docker.png" />
+
+## [Docker](https://www.docker.com)
+
+### The Modern Platform for High-Velocity Innovation
+
+Docker is an open-source and free containerization platform.  Working applications and all dependencies can be packaged into docker containers, shipped and deployed across environments, machines, and host operating systems.
 
-::: warning Incomplete
-This section is incomplete.
-:::