10-listen-on-ipv6-by-default.sh should cover templates that supported by 20-envsubst-on-templates.sh

[markxp]

Is your feature request related to a problem? Please describe

Although 20-envsubst-on-templates.sh support environment varibable substitution, I still want the incompleted server config be supported by 10-listen-on-ipv6-by-default.sh.

Describe the solution you'd like

Currently, 10-listen-on-ipv6-by-default.sh only parse DEFAULT_CONF_FILE, defined in line 13.
The value of DEFAULT_CONF_FILE="etc/nginx/conf.d/default.conf"
I suggest to support "etc/nginx/templates/default.conf.template" or enable a enironment variable read at line 13.

Such as
DEFAULT_CONF_FILE= "${NGINX_DEFAULT_CONF:-etc/nginx/templates/default.conf.template}"

[thresheek]

Hi @markxp!

What's the point to use the srcipt to change the template you're already providing manually, and, thus, are able to change the way you want?