Resolved Varnish Docker

[Miller]

I have followed the instructions on this page Varnish for WordPress in a Docker container in Plesk Onyx to setup a varnish docker. No matter what I do I cant get the static page to display, I just get the Error 503 Backend fetch failed page.

 

[Miller]

I have solved it, if anyone else has the problem you need to allow 172.17.0.0/16 in your firewall