https://medium.com/capital-one-tech/using-kubernetes-configmap-resources-for-dynamic-apps-9e23ef589121

According to the docs, in Kubernetes, ConfigMap resources “allow you to decouple configuration artifacts from image content to keep containerized applications portable.” Used with Kubernetes pods, configmaps can be used to dynamically add or change files used by containers.

As part of a Kubernetes installer our team wanted to deploy a lightweight file server to the Kubernetes cluster to handle default (root-path) ingress requests. And, we thought it would be nice if we could edit the index.html and CSS files without having to redeploy the application.