Update .gitlab-ci.yml file

.gitlab-ci.yml

 stages:
-  - build
+  - build_image
 
 
-build: 
-  stage: build
+build_and_tag_image: 
+  stage: build_image
   only:
     - master
   image:
@@ -19,7 +19,6 @@ build:
 
 
 build_latest:
-  stage: build
   image:
     name: gcr.io/kaniko-project/executor:v1.14.0-debug
     entrypoint: [""]