In this directory run
make start
then press ,nd
to run test with dap
strategy on provided PHPUnit test.
If it works, from some PHP project directory try
make -C /path/to/this/directory run
or directly
nvim -u /path/to/this/directory/nvim/init.lua ./path/to/your/UnitTest.php
Look what's already defined in nvim/init.lua
.