Exercise

Overriding ARG in a build

The ARG Dockerfile instruction allows us to set a variable in a Dockerfile and then optionally override it when building an image. We've added a Dockerfile to your current working directory with the following instructions:The Dockerfile adds an ARG named WELCOME$\_$TEXT, which is then printed during the build. The same text is printed when a container is started from the image.$$ Instructions$100$XP

Using the terminal, enter the command to build the Dockerfile and set the WELCOME$\_$TEXT variable to $$

Terminal

Slides

s $$