kubernetes web tty demo with Deno

intended to be served from inside the cluster
serves a basic xterm.js which is plugged into a particular pod
uses websockets, which (with Deno) means that --cert must be provided as below
uses websocketstream, so you also need --unstable
is very insecure, do not serve on the internet
error handling is bad

you can run like this:

deno run -A --unstable --cert /var/run/secrets/kubernetes.io/serviceaccount/ca.crt mod.tsx