ci: only build on CI

.gitlab-ci.yml

@@ -7,9 +7,7 @@ variables:
 stages:
   - prebuild
   - build
-  - testing
   - release
-  - deploy
 
 docker_lint:
   stage: prebuild
@@ -26,6 +24,8 @@ build:
     - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN gitlab.nexdev.uk:5555
     - docker build -t $IMAGE_NAME:$CI_COMMIT_SHA .
     - docker push $IMAGE_NAME:$CI_COMMIT_SHA
+  only:
+    - tags
   tags:
     - nexus_runner