This method seems to not work reliably with Brother-HL-L2370DN-series printers right now. At least after a quick search I’ve found a bug report about an infinite loop problem in certain circumstances and sadly with my HL-L2372DN I was unable to print at all (infinite loop with occasional ! USB[0]: zero-size read error; CUPS 2.4.10 and ipp-usb 0.9.27).

For Brother HL-L2372DN it is possible to use Gutenprint with the supplied Generic PCL 6 Printer wide margin printer driver but two sided printing is quirky sometimes if you print odd number of pages.

Anyway, thanks for your post!

Debian with Docker containers works well for my needs.