The command docker run -v /path/to/dir does not accept relative paths, you should provide an absolute path. The command can be re-written as:
sudo docker run -d \
--name eluci \
-v "/$(pwd)/config/eluci.settings:/mnt/eluci.settings" \
-v "/$(pwd)/config/elucid.log4j.settings.xml:/mnt/eluci.log4j.settings.xml" \
--link eluci-database:eluci-database \
/opt/eluci/run_eluci.sh