fix(ci): don't create an image for every commit

Author: arcln

.gitlab-ci.yml

@@ -11,9 +11,7 @@ build dirty docker image:
     - apk add --update make git
     - echo $CI_REGISTRY_PASSWORD | docker login $CI_REGISTRY -u $CI_REGISTRY_USER --password-stdin
   script:
-    - git log | head -n 1 | awk '{ print $2 }'
-    - echo $CI_COMMIT_SHA
-    - VERSION="${CI_COMMIT_SHA}" make push
+    - VERSION=dirty make push
   except:
     - tags