NGINX_INDEX_FILE doesn't work from v5.1.0 and above

[walkero-gr]

Hello all.
Using the nginx 1.5-5.0.18 I can set the default index file other than index.php with the environment variable NGINX_INDEX_FILE, with NGINX_VHOST_PRESET: php

Unfortunately if I try to use any other version from 1.15-5.1.0 and above this doesn't work. Of 'course none of the available versions of 1.17 works as well.

Then change that happened at the php preset is at line 5 where
{{ $index := (getenv "NGINX_INDEX_FILE" "index.php") }}
cahnged to
{{ $index := (getenv "NGINX_FASTCGI_INDEX" "index.php") }}

As a result of the above is to have a different file mentioned at the produced preset.conf file inside /etc/nginx, where on every version from 5.1.0 there is the following line
try_files $uri /index.php?$args;
instead of
try_files $uri /front.php?$args;
For the above I set the NGINX_INDEX_FILE: front.php

Of 'course if I set both ENV variables the same file, it works just fine. i.e.
NGINX_INDEX_FILE: 'front.php'
NGINX_FASTCGI_INDEX: 'front.php'

Is this intentional or a mistake? I am asking because the documentation doesn't mention it anywhere.

[csandanov]

The separation on two env vars was done intentionally because multiple files can be provided for the vhost index unlike fastcgi index, see #11