change templates with docker

Hi, i found a few hints to change the templates easy by changing the files in the dir /traccar/templates

using the latest docker image with a synology nas will use the mappings

//own dir /opt/traccar/data
//own dir /opt/traccar/logs

and

//own file /opt/traccar/conf/traccar.xml

to geht a running system

using

//own dir /opt/traccar/templates/full

or

//own dir /opt/traccar/templates/short

is showing empty directories
what is the right path to map the templates dir in an docker enviroment ?

thanks for a short answer...