CI/CD => Fix tests

ExerciseChecker/.gitlab-ci/01_functions.yml

 .get_vars:
     script:
-        - IS_DEV=$([[ $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $CI_COMMIT_BRANCH != "test" ]] && echo false || echo true)
+        - IS_DEV=$([[ $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH && $CI_COMMIT_BRANCH != "test" ]] && echo true || echo false)
         - IS_TEST=$([[ $CI_COMMIT_BRANCH == "test" ]] && echo true || echo false)
         - |
-            if [ $IS_TEST == true ]; then
+            if [[ $IS_TEST == true ]]; then
                 DOCKER_REGISTRY_USER="dojohessotest"
                 DOCKER_REGISTRY_IMAGE="dojohesso/dojo-test_exercise_checker"
                 DOCKER_REGISTRY_PASSWORD=$DOCKER_TEST_REGISTRY_PASSWORD
@@ -33,7 +33,7 @@
 
         # Init docker buildx
         - |
-            if [ $CI_COMMIT_REF_PROTECTED == "true" || $CI_COMMIT_BRANCH == "test" ]; then
+            if [[ $CI_COMMIT_REF_PROTECTED == "true" || $IS_TEST == true ]]; then
                 docker login -u $DOCKER_REGISTRY_USER -p $DOCKER_REGISTRY_PASSWORD $DOCKER_REGISTRY
             fi
         - docker buildx create --use
@@ -53,7 +53,7 @@
         - cd $PROJECT_FOLDER
         - sed -i -r "s/\{\{VERSION\}\}/${VERSION}/g" src/app.ts
         - |
-            if [ $CI_COMMIT_REF_PROTECTED == "true" || $CI_COMMIT_BRANCH == "test" ]; then
+            if [[ $CI_COMMIT_REF_PROTECTED == "true" || $IS_TEST == true ]]; then
                 echo "Decrypt production env vars"
                 sed -i -r "s/(DOTENV_KEY[ ]*:[ ]*[\'\"\`])[^'\"\`]*([\'\"\`])([ ]*\,)?//g" src/app.ts
                 sed -i -r "s/,[\ \n]*\}/\}/g" src/app.ts