Add explicit CMAKE_BUILD_TYPE to CI configure options

ci/linux/everything.sh

@@ -38,6 +38,7 @@ export SAMMY_CONFIGURE_OPTIONS="-DBUILD_SHARED_LIBS:BOOL=${BUILD_SHARED_LIBS} \
                                 -DBLAS_LIBRARY_DIRS:PATH=${toolchain}/lib \
                                 -DCMAKE_C_COMPILER:STRING=${C_COMPILER} \
                                 -DCMAKE_CXX_COMPILER:STRING=${CXX_COMPILER} \
+                                -DCMAKE_BUILD_TYPE:STRING="RELEASE" \
                                 -DCMAKE_Fortran_COMPILER:STRING=${Fortran_COMPILER}"
 
 export SCALE_CONFIGURE_OPTIONS="${SAMMY_CONFIGURE_OPTIONS} \