TMS.MQTT.Logging.pas has in its uses fmx.types when compiling for linux.
Out of the box, there is no fmx for linux.
And if we use fmxLinux from Getit, then that introduces a dependency on some graphical linux packages, which again is not good if we want to run in a minimalistic docker container.
At this moment, TMS MQTT expects FMX Linux to be present to target Linux. Not sure if we can eliminate this dependency. We'll need to investigate this.