🐋 Update info about Docker+K8S

slides/k8s/concepts-k8s.md

@@ -287,7 +287,9 @@ No!
 
 --
 
-- By default, Kubernetes uses the Docker Engine to run containers
+- The Docker Engine used to be the default option to run containers with Kubernetes
+
+- Support for Docker (specifically: dockershim) was removed in Kubernetes 1.24
 
 - We can leverage other pluggable runtimes through the *Container Runtime Interface*
 
@@ -329,32 +331,26 @@ Yes!
 
 - We can do these things without Docker
   <br/>
-  (and get diagnosed with NIH¹ syndrome)
+  (but with some languages/frameworks, it might be much harder)
 
 - Docker is still the most stable container engine today
   <br/>
   (but other options are maturing very quickly)
 
-.footnote[¹[Not Invented Here](https://en.wikipedia.org/wiki/Not_invented_here)]
-
 ---
 
 class: extra-details
 
 ## Do we need to run Docker at all?
 
+- On our Kubernetes clusters:
+
+  *Not anymore*
+
 - On our development environments, CI pipelines ... :
 
   *Yes, almost certainly*
 
-- On our production servers:
-
-  *Yes (today)*
-
-  *Probably not (in the future)*
-
-.footnote[More information about CRI [on the Kubernetes blog](https://kubernetes.io/blog/2016/12/container-runtime-interface-cri-in-kubernetes)]
-
 ---
 
 ## Interacting with Kubernetes