Collapse old Calico installation instruction in README
# Calico on AWS
-This chart installs Calico on AWS: https://docs.aws.amazon.com/eks/latest/userguide/calico.html
+## The instructions and charts provided in this repo have been deprecated and will not be updated. The recommended way to install Calico on EKS is via [Tigera Operator](https://github.com/tigera/operator) instead of this helm-chart.
+You can follow https://docs.aws.amazon.com/eks/latest/userguide/calico.html for detailed instructions.
+
+<details>
+ <summary>Click to expand the older and now deprecated installation instructions</summary>
## Prerequisites
@@ -74,3 +78,4 @@ Specify each parameter using the `--set key=value[,key=value]` argument to `helm
```shell
$ helm install --name aws-calico --namespace kube-system eks/aws-calico --values values.yaml
```
+</details>
