docker tag k8scourse-front <yourname>/k8scourse-front
docker tag k8scourse-back <yourname>/k8scourse-back
docker push <yourname>/k8scourse-front
docker push <yourname>/k8scourse-back
Before push, make sure you have login:
docker login --username=
Additional Reading
Here are some more reading materials that you can reference for improving how Docker is used in a production system.