apache modules expires and proxy

[pehamraza]

hey, I'm playing around with this repo, I need these modules "expire" & "proxy" in apache enabled.
What I want to know is, if i modify the Dockerfile in php-apache/Dockerfile and add these modules in it, when building, will it make any difference or its just pulling docker image from docker hub and ignoring this Dockerfile in php-apache folder at all?

you have,
web: image: tbmatuka/php-apache-development

in docker-compose set