Links do not work if behind a Proxy with path

[dale-wahl]

Using an apache config such as this works fine:
<VirtualHost *>
ServerName my.website.com
ProxyPreserveHost On

Docker dmi_pix_plot

ProxyPass / http://127.0.0.1:4000/ connectiontimeout=3600 timeout=3600
ProxyPassReverse / http://127.0.0.1:4000/

```

But if you want to host at my.website.com/pixplot, I seem to be unable to get it to work. The site is hosted at my.website.com/pixplot and all pages are also accessible (e.g. my.website.com/pixplot/uploads), BUT the links redirect without the path to my.website.com. I have tried various methods, but so far unsuccessfully. Something between apache - docker - gunicorn fails and most setups with gunicorn use nginx.

I have been debating using a nginx container to the docker setup and attempting that.

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