Run the app locally; try outs

cd into k8s-demo-colour and then
$ sudo npm install http-server -g
$ export K8S_DEMO_COLOR_BACKGROUND=green
$ node webapp/webserver.js

Build the image 'k8s-demo-color:1.0.0'

$ docker build --tag k8s-demo-colour:1.0.0 .

Run the container

$ docker run --publish 8080:8080 --env COLOR_BACKGROUND=yellow k8s-demo-colour:1.0.0