How to update GCS bucket file permission using gsutil command?
# gsutil acl ch -u AllUsers:R gs://<BUCKET_NAME>/static/google-cloud.png Updated ACL on gs://<BUCKET_NAME>/static/google-cloud.png
# gsutil acl ch -u AllUsers:R gs://<BUCKET_NAME>/static/google-cloud.png Updated ACL on gs://<BUCKET_NAME>/static/google-cloud.png