Google sites redirects to the real site rather than remaining on the proxied URL

Hi,

I had to make some changes to the Dockerfile to get it to build, but once I got it building I gave it a go (I'll open a PR with my changes).

Unfortunately, while it does seem to load the proxied Google site page fine, after a second or so it does a redirect to the real Google sites URL.

I know this project isn't maintained anymore, but any ideas how to avoid this redirect?

Cheers