ee intro: note docker context released-in version (#9799)
ee intro: note docker context released-in version (#9799)

Signed-off-by: Trapier Marshall <4fb0bc169ac8ff7fffe18129ef52aefd3fb67d5a@docker.com>
docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,thaJeztah/docker.github.io,docker/docker.github.io,docker/docker.github.io,docker/docker.github.io,thaJeztah/docker.github.io