diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4901c006c..febc96308 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,5 @@
+image: "python:3.7"
+
 build:
   stage: build
   image:
@@ -7,5 +9,5 @@ build:
     - /kaniko/executor
       --context "${CI_PROJECT_DIR}"
       --dockerfile "${CI_PROJECT_DIR}/Dockerfile"
-#  rules:
-#    - if: $CI_COMMIT_TAG
+  rules:
+    - if: $CI_COMMIT_SHA