adding file-based logging to epi fit (to allow different configuration when running in gitlab-ci)

.gitlab-ci.yml

@@ -159,6 +159,7 @@ epi_fit:
       /storage/app/EWS_prod/regions/EastAfrica/test_workspace/integration/epi_fit/dev/data_proc/6.0_epi_pipeline/inputs/configs/example_optimum_parameters_metrics.csv 
 
       exit_code=$?
+      echo "Exit code: $exit_code"
       
       if [ $exit_code -ne 0 ]; then
         echo "Parameter metrics comparison failed"