To force to use same cache directory at everytime I started varnish

[Babblu Ghimire]

I am a lerner and know very little about Varnish. Though, every time I
started varnish on my RHEL, change of cache directory is shown as
follows :
storage_file: filename: ./varnish.kEDdOW (unlinked) size 2047 MB.

I am curious - is there anyway to force to use same cache directory at
everytime I started varnish ?

Regards
Balram