Merge branch 'tut01' into 'main'

Tut01 test exercise

See merge request !6

.gitlab-ci.yml

+workflow:
+  rules:
+    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
+      when: always
+    - if: $CI_PIPELINE_SOURCE == "push" && $CI_COMMIT_BRANCH == "main"
+      when: always
+    - when: never
+
 stages:
   - test
   - build
@@ -15,7 +23,8 @@ job_test_the_code:
 job_build_artifact:
   stage: build
   rules:
-    - when: always
+    - if:  $CI_PIPELINE_SOURCE == "push" && $CI_COMMIT_REF_NAME =~ /main/
+      when: always
   image: registry.hub.docker.com/library/golang:1.21
   script:
     - go get -t ./...