trying out docker version

Hi,
in the traccar.org/docker page, it says:

At project root folder run:

sh ./setup/docker/build.sh

but the source code downloaded does not have ./setup/docker folder,

https://github.com/traccar/traccar/tree/v4.5/setup

where could I find a version that has docker/build.sh? Thanks

found out:

https://github.com/traccar/traccar-docker