configuration
vim /usr/share/jitsi-meet/static/welcomePageAdditionalContent.html
vim /etc/jitsi/meet/konferenz.host.de-config.js
vim /etc/jitsi/videobridge/jvb.conf
vim /usr/share/jitsi-meet/interface_config.js
cp wallpaper.png /usr/share/jitsi-meet/images/welcome-background.png
vim /etc/prosody/conf.d/konferenz.host.de.cfg.lua