Update env-runtime.md

docs/setup/env-runtime.md

@@ -179,13 +179,13 @@ sudo reboot
 To install the latest supported version:
 
 ```
-sudo apt-get update && sudo apt-get install -y apt-transport-https curl
+sudo apt-get update && sudo apt-get install -y apt-transport-https ca-certificates curl gpg
 
 curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
 
-sudo sh -c 'cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
-deb https://apt.kubernetes.io/ kubernetes-xenial main
-EOF'
+echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.27/deb/ /" | sudo tee /etc/apt/sources.list.d/kubernetes.list
+
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.27/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
 
 # Install latest supported k8s version
 sudo apt-get update