Correct env name

.gitlab-ci.yml

@@ -20,7 +20,7 @@ deploy:
   script:
     - printenv
     - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" "$CI_REGISTRY" 
-    - docker pull ${CI_REGISTRY__IMAGE}
+    - docker pull ${CI_REGISTRY_IMAGE}
     - docker logout
     - docker tag ${CI_PROJECT_NAME} ${DOCKER_USER}/${DOCKER_IMAGE}
     - docker login -u ${DOCKER_USER} -p ${DOCKER_PASSWORD}