It is ok to use go build ./cmd/cgtproxy to build this project
if you want to install it from source.
But it's recommend to use the Makefile I provided to make sure
execute go generate before buid.
Some tests need to run in network namespace to void mess up your nft configuration.
These tests will be skipped when running without a environment variable set.
Check sources for details.
To run these tests locally,
use the test target defined in Makefile by running make test.