Internet in Box- offline content

Hello everyone,
I don't know if you are familiar with the project Internet-in-a-Box “learning hotspots”, or RACHEL(Remote Area Community Hotspot for Education and Learning), where you use an access point with an attached SD card or attached hard disk, to broadcast an offline content via a local website.

I wanna build that using The Beryl MT1300, if some expert would like to help me with the steps, I would really appreciate that.
The website is ready with the content.
Any suggestions or recommendation are really welcome .

Thank you so much

Use the built in nginx for it - should be no big deal.