CI/CD => Backend: rectify env path

.gitlab-ci.yml

@@ -22,7 +22,7 @@ deploy:
         # Get env file
         - |
             echo "Decrypt production env vars" # Do not remove this line because it is used for hide the production key from the ci/cd console
-            npx dotenv-vault local decrypt "${DOTENV_PROD_KEY}" > ../.env
+            npx dotenv-vault local decrypt "${DOTENV_PROD_KEY}" > ../../.env
 
         # Deploy
         - cd ../../