We have by far the largest RPM repository with dynamic stable NGINX modules and VMODs for Varnish 4.1 and 6.0 LTS. If you want to install NGINX, Varnish, and lots of useful modules for them, this is your one-stop repository to get all performance-related software.
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Use our up-to-date, bug free, time tested and proactively developed version of Varnish VCL for Magento 2:
Key differences from default Magento VCL
Microcache for search results
Clearing cache for specific store (you need to amend changes to core as per this ticket for this)