Be sure to run it at the root of the project.
$ docker run -it --rm -v $(pwd)/kerio-kvc.conf:/etc/kerio-kvc.conf jarri1999/kerio-client-generate-config
<config>
<connections>
<connection type="persistent">
<server>vpn.domain.com</server>
<port>4090</port>
<username>USERNAME</username>
<password>XOR:0123456789</password>
<fingerprint>0A:1B:2C:3D:0A:1B:2C:3D:0A:1B:2C:3D</fingerprint>
<active>1</active>
</connection>
</connections>
</config>
$ docker-compose up -d
$ curl --proxy http://127.0.0.1:8118 https://api.ipify.org
$ >>> Some amazing IP