Script to idempotently deploy to a VPS.

[chr15m]

This PR adds a script at the top level called ./deploy.sh.

You can use this to deploy strfry to a fresh Ubuntu VPS with one command.

Run ./deploys.sh for help:

Deploys strfry to a fresh Ubuntu VPS.
(Installs nginx, acme.sh, and builds strfry from scratch)

Usage: ./deploy.sh HOST [ADMIN_EMAIL]
Example: ./deploy.sh my-relay.example.com admin@example.com

The script is idempontent - you can run it multiple times on the same server e.g. if it fails half way through or something.

See relay.mccormick.cx for a server that was deployed with this method.