Improve documentation on using Docker with the web demo.
Improve documentation on using Docker with the web demo.

nhzandi/openface,sumsuddinshojib/openface,nmabhi/Webface,cmusatyalab/openface,Alexx-G/openface,nmabhi/Webface,xinfang/face-recognize,francisleunggie/openface,francisleunggie/openface,sumsuddinshojib/openface,xinfang/face-recognize,nmabhi/Webface,sumsuddinshojib/openface,nmabhi/Webface,nhzandi/openface,nhzandi/openface,cmusatyalab/openface,Alexx-G/openface,Alexx-G/openface,francisleunggie/openface,sumsuddinshojib/openface,cmusatyalab/openface,xinfang/face-recognize,Alexx-G/openface