hi.
i.e dosbox is not of any use for me if i can't use it because i have not the "good" keyboard. and "good" is defined by the dev to be a qwerty keybord.

so nobody seems to care about the guys who do not have such a keyboard.

in the README, there is nothing usefull for such a problem.
Com'on don't tell me about the keymapper. you do not want to redefine 15 keys every time you launch dosbox, do you ?
they better write
keymap WE DO NOT CARE

so even in the VOGONS dosBOX GUIDE there is no
KEYMAP ISSUE GUIDE
where is it ?

so in the french user guide (great job man !)
there is THE solution : Freedos KB

Here is the missing keymap guide :
================================
CREDIT: french user guide from pseudopode at http://clinique.jeuxvideos.free.fr/)

go to http://projects.freedos.net/keyb/ bottom of the page for downloads
and

• download the KEYB binary
  donwload the KC binary
  and what they call "precompiled layout keyboard"

but you have to compile them by the way.
unzip all of them in one (~/tmp) directory of your choice

i assume you want the FR keyboard but choose the one you want in SOURCE/KEYDOS

in dosbox

1mount e ~/tmp
2cd e:
3cd BIN
4KC ../SOURCE/KEYDOS/FR.KEY

so you got now a FR.KL in ~/tmp/SOURCE/KEYDOS/ ( a "compiled" keymap)

we need it and ~/tmp/BIN/KEYB.EXE

i assume you have already a customizes .dosboxrc with

1[autoexec]
2mount c ~/dosbox

so just add

1c:
2KEYB FR

of course you have moved KEYB.EXE and FR.KL in ~/dosbox !
that's it
enjoy your new keymap
============================
i hope this will become some sort of GUIDE
you're welcome to correct my bad english 😀