Improve pipeline to only run what's necessary, when it's necessary

.gitlab-ci.yml

@@ -39,9 +39,6 @@ test:
       junit:
         - "*/build/test-results/**/TEST-*.xml"
         - "*/build/reports/*.xml"
-  rules:
-    - if: "$CI_COMMIT_TAG || $CI_COMMIT_BRANCH == 'master'"
-      when: on_success
 
 release-artifacts:
   stage: "release"
@@ -52,7 +49,7 @@ release-artifacts:
     paths:
       - "build/libs/*"
   rules:
-    - if: "$CI_COMMIT_TAG || $CI_COMMIT_BRANCH == 'master'"
+    - if: "$CI_COMMIT_TAG"
       when: on_success
 release-docs:
   stage: "release"
@@ -65,5 +62,5 @@ release-docs:
     - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
     - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $CI_REGISTRY_IMAGE:${CI_COMMIT_TAG:-$CI_COMMIT_SHORT_SHA}-docs --destination $CI_REGISTRY_IMAGE:docs
   rules:
-    - if: "$CI_COMMIT_TAG || $CI_COMMIT_BRANCH == 'master'"
+    - if: "$CI_COMMIT_BRANCH == 'master'"
       when: on_success