Use np_tmcode docker image in pipeline

.gitlab-ci.yml

 # CI pipeline configuration
 
 default:
-  image: gcc
+  image: gmulas/np-tmcode
 
 # Switch from branch pipelines to merge request pipelines when a merge request is created
 workflow:
@@ -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
@@ -42,22 +42,22 @@ building_stage:
       - echo $CI_COMMIT_BRANCH
       - cd src
       - echo "Running make (ONLY C++ CODE)"
-      #- make conly
+      - 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
@@ -66,26 +66,26 @@ running_stage:
       - echo $CI_COMMIT_BRANCH
       - cd build/sphere
       - echo "Running np_sphere"
-      #- chmod +x np_sphere
-      #- ./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
@@ -93,11 +93,11 @@ testing_stage:
       - echo $CI_COMMIT_SHA
       - echo $CI_COMMIT_BRANCH
       - cd build/sphere
-      #- cp ../../test_data/sphere/OSPH .
+      - export FFILE=../../test_data/sphere/OSPH
       - echo "Comparing output of SPHERE"
-      #- python3 ../../src/scripts/pycompare.py --ffile=OSPH --cfile=c_OSPH --html
+      - python3 ../../src/scripts/pycompare.py --ffile=$FFILE --cfile=c_OSPH --html
       - cd ../cluster
       - echo "Comparing output of CLUSTER"
-      #- cp ../../test_data/cluster/OCLU .
-      #- python3 ../../src/scripts/pycompare.py --ffile=OCLU --cfile=c_OCLU --html
+      - export FFILE=../../test_data/cluster/OCLU
+      - python3 ../../src/scripts/pycompare.py --ffile=$FFILE --cfile=c_OCLU --html