In the README.md file of wekan-autoinstall, it is possible to edit particularly ROOT_URL
it is not explained if once ROOT_URL is edited, the following line has to be edited as well in the script:

181 /sbin/ifconfig | grep "inet addr" | grep -v "127.0.0.1" | awk '{ print $2 }' | awk -F: '{ print $2 }'

Wekan auto-installation script link:
https://github.com/wekan/wekan-autoinstall