Try auto building images

.gitlab-ci.yml

@@ -49,3 +49,15 @@ Go-flake8:
   script:
     - pip install flake8
     - flake8 go/ --statistics --exit-zero
+
+build:
+  stage: build
+  retry: 2
+  image:
+    name: gcr.io/kaniko-project/executor:debug
+    entrypoint: [""]
+  script:
+    - 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.prod --destination $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG
+  only:
+    - tags