Readonly FileSystem and A ReadStream cannot be created from a destroyed WriteStream.  Temp directory location ?
For security we have setup readonly file system.   When that is on we get the following error "A ReadStream cannot be created from a destroyed WriteStream."

This can be duplicated by ie.  docker run -it --read-only. (or using docker-compose read_only true ).

it is possible to allow writes to a certain directory, ie. docker run -it --read-only --tmpfs /tmp alpine sh

My question is - w**hat is the directory that graphqluploads is using to back the files** so that we can setup the appropriate tmpfs ?  

 I do not write local in my code we create a readStream and then upload to s3 buckets directly