sub_filter

[panaris]

Is your feature request related to a problem? Please describe.
I want to be able to replace footer copyrights.

Describe the solution you'd like
Just enable the ngx_http_sub_module http://nginx.org/en/docs/http/ngx_http_sub_module.html

Describe alternatives you've considered
Not always easy to modify the copyright otherwise especially when working with docker.

[BananaAcid]

The module seems to be enabled, and is useable. (I am using it in the Advanced tab directly and additionally within a location tab)

example

proxy_set_header Accept-Encoding "";
sub_filter_types text/html;
sub_filter '127.0.0.1' 'localhost' ;
sub_filter_once off;