Documentation regarding the usage of FPM versions of the image

[samip5]

I'm a little confused as to how one should configure nginx with the FPM version of the image?

[wglambert]

Using FPM is a more involved process than can be concisely explained in the image's documentation, and it's specific to the particular web server you'd be using.

Here's an example of using wordpress:fpm with nginx
https://github.com/mjstealey/wordpress-nginx-docker/blob/master/docker-compose.yml
https://github.com/mjstealey/wordpress-nginx-docker

If you need further help you could also try asking over at the Docker Community Forums, Docker Community Slack, or Stack Overflow. Since these repos aren't really a user-help forum