Steps for generating olsrd [1] Debian 11 package via Docker container.
[1] specific olsrd build https://github.com/OLSR/olsrd/tree/4973feb538b5b98b9d8ac2f8f474202f6d73de78
sudo docker build -t build-olsrd .
DIR=/tmp/olsr-build-share
mkdir $DIR
sudo docker run --detach=false --rm -v $DIR:/olsrd/mount build-olsrd
All .deb files are now in $DIR of the docker host.