Update .gitlab-ci.yml

1 job for master in 44 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #618
build

00:00:44

 
Name Stage Failure
failed
build Test
  Tell CMake where to find the compiler by setting either the environment
variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
to the compiler, or to the compiler name if it is in the PATH.


-- Configuring incomplete, errors occurred!
See also "/builds/Google-TPU/BLAS-join/cmake/build/CMakeFiles/CMakeOutput.log".
See also "/builds/Google-TPU/BLAS-join/cmake/build/CMakeFiles/CMakeError.log".
ERROR: Job failed: exit code 1