use conda instead of mamba for xesmf because the package breaks using…

… mamba

internal/scripts/docker_env/scripts/xesmf_env.sh

@@ -24,4 +24,29 @@ BASE_ENV=metplus_base.${METPLUS_VERSION}
 mamba create -y --clone ${BASE_ENV} --name ${ENV_NAME}
 mamba install -y --name ${ENV_NAME} -c conda-forge netcdf4==1.6.2
 mamba install -y --name ${ENV_NAME} -c conda-forge xarray==2022.3.0
-mamba install -y --name ${ENV_NAME} -c conda-forge xesmf==0.3.0
+conda install -y --name ${ENV_NAME} -c conda-forge xesmf==0.3.0
+
+# had to use conda to install xesmf==0.3.0 because conda and mamba obtain
+# different versions of dependencies and a use case fails trying
+# to import from xesmf:
+#
+# ERROR:
+#   File "/usr/local/conda/envs/xesmf.v6.0/lib/python3.10/site-packages/xesmf/backend.py", line 19, in <module>
+#    import ESMF
+#ModuleNotFoundError: No module named 'ESMF'
+#
+# Conda dependencies obtained:
+#
+# esmf-8.2.0                 | nompi_h61edca3_0        27.4 MB  conda-forge
+# esmpy-8.2.0                |nompi_py310ha0140b2_1         175 KB  conda-forge
+# netcdf-fortran-4.5.4       |nompi_h2b6e579_100         1.3 MB  conda-forge
+# scipy-1.11.3               |  py310hb13e2d6_1        14.3 MB  conda-forge
+# xesmf-0.3.0                |             py_0          19 KB  conda-forge
+#
+# Mamba dependencies obtained:
+#
+# esmf              8.4.1  nompi_he2e5181_0    conda-forge/linux-64      24MB
+# esmpy             8.4.1  pyhc1e730c_0        conda-forge/noarch        48MB
+# netcdf-fortran    4.6.0  nompi_heb5813c_103  conda-forge/linux-64     417kB
+# scipy            1.11.3  py310hb13e2d6_1     conda-forge/linux-64      15MB
+# xesmf             0.3.0  py_0                conda-forge/noarch        20kB