What is --template-driver used for?

Docker
#1

Hi,

In this documentation, I provide --template-driver for this command

docker config create --template-driver golang homepage index.html.tmpl

I wonder what --template-driver is for in this command?

Many thanks

#2

@minh_duc The parameter --template-driver is to specify golang as template engine. Docker image is a read only template for creating application containers.