How to modify prosody-plugins if I am using docker-jitsi-meet

I want to make some changes in prosody-plugins files(like in jitsi-meet/resources/prosody-plugins/mod_conference_duration_component.lua). I am using docker image of prosody ,jvb and jicofo .The jitsi-meet code I am using from the path “srv/meetAbc/jitsi-meet”. So where should I make changes in docker image of prosody or in jitsi-meet folder.