This is the document[1] referring to /tmp file as a writable file which may be able to be the reference file. App Engine Flex should also work however please reply if you are using Flex and using /tmp as the reference file does not work in this case.
[1] https://cloud.google.com/appengine/docs/standard/go111/runtime#filesystem_2 [2] https://cloud.google.com/appengine/docs/flexible/go/runtime -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/8a070f3e-277e-463d-9129-635616e70870%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
