Hello,
I have exported my website www.chimai.com into mediawiki format. All the files are here:
https://drive.google.com/drive/folders/1X_bx6vxtZRQSzadXFQXK8wMsuKsOOKmx?usp=sharing
The pages (in pages.zip) are all txt files.
The images are spread across 4 zip files.
I do not have a MediaWiki running anywhere, so I'm not sure I can comply with the requirement of creating an XML Dump. Sorry about that. I hope you can manage the import this way.
Thank you
Didier