add postgres service to test

.gitlab-ci.yml

@@ -17,7 +17,6 @@ build:
     name: gcr.io/kaniko-project/executor:debug
     entrypoint: [""]
   script:
-    - echo $DEPLOY
     - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG
 
 test:
@@ -25,6 +24,9 @@ test:
   only:
     variables:
     - $CI_COMMIT_TAG
+  services:
+  - name: postgres:12
+    alias: postgres
   image:
     name: $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG
     entrypoint: [""]