Add shim documentation to the website.

Add three new doc pages to the website.

- A containerd quick start covering containerd 1.2. This is limited to shim v2
  and runtime class as the docs would get too complicated explaining all the
  combinations that are possible. We want folks to use shim v2 and runtime
  class anyway.
- An advanced configuration page. This covers containerd and
  containerd-shim-runsc-v1's configuration options.
- A page for old versions (i.e. containerd 1.1). Notes that this is deprecated
  and supported on a best-effort basis.

Fixes #3279

PiperOrigin-RevId: 324775563

1 files changed, 0 insertions, 46 deletions

diff --git a/g3doc/user_guide/runtimeclass.md b/g3doc/user_guide/runtimeclass.md
deleted file mode 100644
index 2e2d997be..000000000
--- a/g3doc/user_guide/runtimeclass.md
+++ /dev/null
@@ -1,46 +0,0 @@
-# RuntimeClass
-
-First, follow the appropriate installation instructions for your version of
-containerd.
-
-*   For 1.1 or lower, use `gvisor-containerd-shim`.
-*   For 1.2 or higher, use `containerd-shim-runsc-v1`.
-
-# Set up the Kubernetes RuntimeClass
-
-Creating the [RuntimeClass][runtimeclass] in Kubernetes is simple once the
-runtime is available for containerd:
-
-```shell
-cat <<EOF | kubectl apply -f -
-apiVersion: node.k8s.io/v1beta1
-kind: RuntimeClass
-metadata:
-  name: gvisor
-handler: runsc
-EOF
-```
-
-Pods can now be created using this RuntimeClass:
-
-```shell
-cat <<EOF | kubectl apply -f -
-apiVersion: v1
-kind: Pod
-metadata:
-  name: nginx-gvisor
-spec:
-  runtimeClassName: gvisor
-  containers:
-  - name: nginx
-    image: nginx
-EOF
-```
-
-You can verify that the Pod is running via this RuntimeClass:
-
-```shell
-kubectl get pod nginx-gvisor -o wide
-```
-
-[runtimeclass]:  https://kubernetes.io/docs/concepts/containers/runtime-class/