Build inja_test failed.

[wendajiang]

cmake -B build -S . -DCMAKE_BUILD_TYPE=Debug
cmake --build build -j2

output the

[ 33%] Building CXX object CMakeFiles/inja_test.dir/test/test.cpp.o
[ 33%] Building CXX object CMakeFiles/single_inja_test.dir/test/test.cpp.o
/Users/david/cpp/inja/test/test.cpp:5:10: fatal error: 'doctest/doctest.h' file not found
#include "doctest/doctest.h"
         ^~~~~~~~~~~~~~~~~~~
1 error generated.
gmake[2]: *** [CMakeFiles/inja_test.dir/build.make:76: CMakeFiles/inja_test.dir/test/test.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:87: CMakeFiles/inja_test.dir/all] Error 2
gmake[1]: *** Waiting for unfinished jobs....
[ 50%] Linking CXX executable single_inja_test
[ 50%] Built target single_inja_test
gmake: *** [Makefile:146: all] Error 2

on Macos, and cmake version is 3.27.2