Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -6,9 +6,9 @@ stages:
 
 variables:
   PYTHONPATH: "${CI_PROJECT_DIR}"
-  DOCKER_DRIVER: overlay2
+  DOCKER_DRIVER: "overlay2"
   DOCKER_REGISTRY: "docker.io"
-  DOCKER_TAG: $CI_COMMIT_SHORT_SHA
+  DOCKER_TAG: "$CI_COMMIT_SHORT_SHA"
   DOCKER_CONTEXT: "Desktop/Telegram_Bot"
   IMAGE_NAME: "telegram-bot"
   DOCKER_TLS_CERTDIR: "/certs"