diff --git a/gcc/Dockerfile b/gcc/Dockerfile
index 591b3f7..0e37b43 100644
--- a/gcc/Dockerfile
+++ b/gcc/Dockerfile
@@ -8,11 +8,11 @@ RUN mkdir /opt/spack-environment \
 &&  (echo "spack:" \
 &&   echo "  specs:" \
 &&   echo "    - cmake@3.24.4" \
-&&   echo "    - netcdf-c@4.9.2+mpi" \
+&&   echo "    - netcdf-c@4.9.2+mpi build_system=cmake build_type=RelWithDebInfo" \
 &&   echo "    - netcdf-fortran@4.6.0" \
-&&   echo "    - parallelio@2.5.10" \
-&&   echo "    - esmf@8.4.2" \
-&&   echo "    - fms@2021.03.01" \
+&&   echo "    - parallelio@2.5.10 build_type=RelWithDebInfo" \
+&&   echo "    - esmf@8.4.2+debug" \
+&&   echo "    - fms@2021.03.01 precision=64 ~gfs_phys ~openmp ~quad_precision build_type=RelWithDebInfo" \
 &&   echo "  view: /opt/view" \
 &&   echo "  concretizer:" \
 &&   echo "    unify: true" \