diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4c7fd950af5819a90f59996bc64c80803980840a..aa2c22accc080ff3fc4027c44cf4df5390156b88 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,15 +25,15 @@ stages:
 building_stage:
    stage: build
    allow_failure: false
-   #artifacts:
-   #   paths:
-   #      - build/cluster/*
-   #      - build/sphere/*
-   #      - build/trapping/*
-   #   exclude:
-   #      - ".git*"
-   #      - ".git/**/*"
-   #   expire_in: 2 hours
+   artifacts:
+      paths:
+         - build/cluster/*
+         - build/sphere/*
+         - build/trapping/*
+      exclude:
+         - ".git*"
+         - ".git/**/*"
+      expire_in: 2 hours
    script:
       # bash commands to be executed
       - pwd
@@ -42,76 +42,79 @@ building_stage:
       - echo $CI_COMMIT_BRANCH
       - echo "Getting system info ..."
       - cat /etc/os-release
-      #- echo "Updating system"
-      #- apt update
+      - echo "Updating system"
+      - yum check-update
+      - yum update
       - echo "Installing dependencies"
-      #- apt install -y g++ gfortran make
+      - yum install -y g++ gfortran make
       - cd src
       - echo "Running make"
-      #- make
+      - make
 
 running_stage:
    stage: run
    allow_failure: false
    needs:
       - job: building_stage
-   #artifacts:
-   #   paths:
-   #      - build/cluster/*
-   #      - build/sphere/*
-   #      - build/trapping/*
-   #   exclude:
-   #      - ".git*"
-   #      - ".git/**/*"
-   #   expire_in: 2 hours
+   artifacts:
+      paths:
+         - build/cluster/*
+         - build/sphere/*
+         - build/trapping/*
+      exclude:
+         - ".git*"
+         - ".git/**/*"
+      expire_in: 2 hours
    script:
       # bash commands to be executed
       - pwd
       - hostname
       - echo $CI_COMMIT_SHA
       - echo $CI_COMMIT_BRANCH
-      #- echo "Updating system"
-      #- apt update
+      - echo "Updating system"
+      - yum check-update
+      - yum update
       - echo "Installing dependencies"
-      #- apt install -y g++ gfortran gdb
-      #- cd build/sphere
-      #- echo "Running np_sphere"
-      #- chmod +x np_sphere
-      #- ./np_sphere
-      #- cd ../cluster
+      - yum install -y g++ gfortran gdb
+      - cd build/sphere
+      - echo "Running np_sphere"
+      - chmod +x np_sphere
+      - ./np_sphere
+      - cd ../cluster
       - echo "Running np_cluster"
-      #- chmod +x np_cluster
-      #- ./np_cluster
+      - chmod +x np_cluster
+      - ./np_cluster
       
 testing_stage:
    stage: test
    allow_failure: true
    needs:
       - job: running_stage
-   #artifacts:
-   #   paths:
-   #      - build/cluster/pycompare.html
-   #      - build/sphere/pycompare.html
-   #   exclude:
-   #      - ".git*"
-   #      - ".git/**/*"
-   #   expire_in: 2 hours
+   artifacts:
+      paths:
+         - build/cluster/pycompare.html
+         - build/sphere/pycompare.html
+      exclude:
+         - ".git*"
+         - ".git/**/*"
+      expire_in: 2 hours
    script:
       # bash commands to be executed
       - pwd
       - hostname
       - echo $CI_COMMIT_SHA
       - echo $CI_COMMIT_BRANCH
-      #- echo "Updating system"
-      #- apt update
-      #- echo "Installing dependencies ..."
-      #- apt install -y python3
-      #- cd build/sphere
+      - echo "Updating system"
+      - yum check-update
+      - yum update
+      - echo "Installing dependencies ..."
+      - apt install -y python3
+      - cd build/sphere
       - export FFILE=../../test_data/sphere/OSPH
       - echo "Comparing output of SPHERE"
-      #- python3 ../../src/scripts/pycompare.py --ffile=$FFILE --cfile=c_OSPH --html
+      - python3 ../../src/scripts/pycompare.py --ffile=$FFILE --cfile=c_OSPH --html
       - cd ../cluster
       - echo "Comparing output of CLUSTER"
       - export FFILE=../../test_data/cluster/OCLU
-      #- python3 ../../src/scripts/pycompare.py --ffile=$FFILE --cfile=c_OCLU --html
+      - python3 ../../src/scripts/pycompare.py --ffile=$FFILE --cfile=c_OCLU --html