I finally found how to get Wake on LAN working from Guacamole in docker, check out this guide.
If you want to install Guacamole with postgres database check out this guide.
Remotely accessing an SSH terminal or graphics session with VNC/RDP can be very useful. Particularly if you have a lot of devices and if you regularly change your workstation. Guacamole is one of the open source solutions on the market.