If you look closely, it has already been explained 
You must, in SSH, type the command ‹ docker stop gladys ›.
Then, copy the file ‹ gladys-production › from ‹ /var/lib/gladysassistant ›
You will just need to put this file back in place after a full reinstallation.
For ZigBee, you need to go through the zigbee
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