Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -48,7 +48,7 @@ pull db image:
     interruptible: true
     stage: pull-db
     script:
-        - echo "$HARBOR_PASSWORD" | docker login -u "$HARBOR_USER" --password-stdin $REGISTRY_URL
+        - echo "$HARBOR_PASSWORD" | docker login --username "$HARBOR_USER" --password-stdin "$REGISTRY_URL"
         - docker pull ${REGISTRY_URL}/db:workspaces
 
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