fix chart path

.gitlab-ci.yml

@@ -230,8 +230,7 @@ publish-helm-chart:
   stage: chart
   script:
     # push Helm chart
-    - cd ./chart
-    - "upload_filename=$(helm package | sed 's/^Successfully packaged chart and saved it to: \\(.*\\)/\\1/')"
+    - "upload_filename=$(helm package ./chart | sed 's/^Successfully packaged chart and saved it to: \\(.*\\)/\\1/')"
     - curl -u $HELM_CHART_REPOSITORY_CREDENTIALS -v -X POST https://charts-public.hub.eox.at/api/charts --data-binary "@${upload_filename}"
   only:
     - tags