added new episode docker/sarus on our VM

- we will make a few tests (including performance analysis)
- we will publish ready to use docker containers (quay or dockerhub).

Author: Anne Fouilloux

_episodes/05-vm.md

@@ -0,0 +1,8 @@
+---
+layout: episode
+title: "Sarus and docker on our Virtual Machines"
+---
+
+In this section, we detail results and performance we get when running CESM/NorESM without and when using containers (both docker and sarus).
+
+