How to modify jitsi-meet.cfg.lua (Docker)

I tried the following:
Modified file:~/.jitsi-meet-cfg/prosody/config/conf.d/jitsi-meet.cfg.lua ,add following properties
smacks_max_unacked_stanzas = 5;
smacks_hibernation_time = 60;
smacks_max_hibernated_sessions = 1;
smacks_max_old_sessions = 1;
But when I restarted the container, the configuration was changed back.
How to keep the changes?
Thanks!

prosody\rootfs\etc\cont-init.d\10-config

mkdir /config/certs

cp -r /defaults/* /config

tpl /defaults/prosody.cfg.lua > $PROSODY_CFG

tpl /defaults/conf.d/jitsi-meet.cfg.lua > /config/conf.d/jitsi-meet.cfg.lua

you need modify /defaults/conf.d/jitsi-meet.cfg.lua

OR

if [[ -f /config/conf.d/custom-jitsi-meet.cfg.lua ]]; then
cat /config/conf.d/custom-jitsi-meet.cfg.lua >> /config/conf.d/jitsi-meet.cfg.lua
fi

and create custom-jitsi-meet.cfg.lua in :~/.jitsi-meet-cfg/prosody/config/conf.d/