Add initial docker directory (#537)
Add initial docker directory (#537)

Folder for source code of container images established.

GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy