sslip.io webservers download the latest HTML
sslip.io webservers download the latest HTML

- previously we had a stale, two-year-old version of the website
- now we download the latest from GitHub from master instead of
  the two-year-old tarball
- we write to the ephemeral disk, not the persistent disk, so
  that we'll download the latest when we recreate (there was no
  reason for us to use persistent anyway).

cunnie/deployments,cunnie/deployments