File upload from web page into container

[geos]

Asked this a few years back, but thought I'd ask again, if anything has changed now that 9/10 is out.

Have a simple webform that collects standard usual user info (name address, etc).

Am looking for a way for end users, via a web page, to be given the option of uploading a Office file to append to a container.

Any suggestions?

(SuperContainer is too expensive, and the volume is too low <40 to justify it.)