How extract iWorks suite mimetype with Exiftool
Phil Harvey has "Improved identification of Apple iWork files" in exiftool version 10.96.  Check to see if that works for you.
I need to extract mimetype with magic number from iWork suite.
How do? Exiftool see ".pages" etc. as "application/zip". But the real mimetype isn't this. 
How can i extract the correct mime?
I can use an validation with python tool if needed. 
"Apline for docker".
Thanks for help.