It contains vlmcs, a KMS test client, mainly for debugging purposes, that also can "charge" a genuine KMS server designed to run on an always-on or often-on device, e.g. router, NAS Box, ...intended to help people who lost activation of their legally-owned licenses, e.g. due to a change of hardware (motherboard, CPU, ...)

vlmcsd is not a one-click activation or crack tool intended to activate illegal copies of software (Windows, Office, Project, Visio)

Docker based in Alpine OS with vlmcsd compiled from "source" (Wind4 GitHub)

$ docker run -d -p 1688:1688 --restart=always --name vlmcsd mikolatero/vlmcsd

Now (thanks to embii74) vlmcsd process send logs to docker.

$ docker logs vlmcsd (change 'vlmcsd' with the docker's name)

slmgr.vbs -upk
slmgr.vbs -ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
slmgr.vbs -skms DOCKER_IP:PORT
slmgr.vbs -ato
slmgr.vbs -dlv

cd \Program Files (x86)\Microsoft Office\Office16
cscript ospp.vbs /sethst:DOCKER_IP
cscript ospp.vbs /setprt:PORT
cscript ospp.vbs /inpkey:xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
cscript ospp.vbs /act
cscript ospp.vbs /dstatusall

cd \Program Files\Microsoft Office\Office16
cscript ospp.vbs /sethst:DOCKER_IP
cscript ospp.vbs /setprt:PORT
cscript ospp.vbs /inpkey:xxxxx-xxxxx-xxxxx-xxxxx-xxxxx
cscript ospp.vbs /act
cscript ospp.vbs /dstatusall

https://forums.mydigitallife.info/threads/50234-Emulated-KMS-Servers-on-non-Windows-platforms
https://github.com/Wind4/vlmcsd

Windows: https://docs.microsoft.com/en-us/windows-server/get-started/kmsclientkeys
Office 2013: https://technet.microsoft.com/en-us/library/dn385360.aspx
Office 2016 & 2019 & 2021: https://technet.microsoft.com/en-us/library/dn385360(v=office.16).aspx

https://hub.docker.com/r/mikolatero/vlmcsd/