Fix examples

examples/ghost/README.md

@@ -0,0 +1,9 @@
+# Example with Ghost
+
+[Ghost](https://ghost.org/) is a simple but powerfull blog engine. It is very nice to test some behaviors with Docker or Podman.
+
+The given `docker-compose.yaml` file here declares a stand-alone blog service. To help using it, we use [Patwae](https://pathwae.net) reverse-proxy to listend http://ghost.example.localhost
+
+The problem to solve is that the `url` environment variable correspond to the Ingress host when we will convert it to Helm Chart. So, we use the `mapenv` label to declare that `url` is actually `{{ .Values.blog.ingress.host }}` value.
+
+Note that we also `ignore` pathwae because we don't need it in our Helm Chart.